68628420

素因数分解:

$2^2\times 3^2\times 5^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{251}}^1$

素因数の和:311

約数の個数: 216

約数和(自身を含む): 250967808

約数和(自身を除く): 182339388

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 31, 35, 36, 42, 45, 49, 60, 62, 63, 70, 84, 90, 93, 98, 105, 124, 126, 140, 147, 155, 180, 186, 196, 210, 217, 245, 251, 252, 279, 294, 310, 315, 372, 420, 434, 441, 465, 490, 502, 558, 588, 620, 630, 651, 735, 753, 868, 882, 930, 980, 1004, 1085, 1116, 1255, 1260, 1302, 1395, 1470, 1506, 1519, 1757, 1764, 1860, 1953, 2170, 2205, 2259, 2510, 2604, 2790, 2940, 3012, 3038, 3255, 3514, 3765, 3906, 4340, 4410, 4518, 4557, 5020, 5271, 5580, 6076, 6510, 7028, 7530, 7595, 7781, 7812, 8785, 8820, 9036, 9114, 9765, 10542, 11295, 12299, 13020, 13671, 15060, 15190, 15562, 15813, 17570, 18228, 19530, 21084, 22590, 22785, 23343, 24598, 26355, 27342, 30380, 31124, 31626, 35140, 36897, 38905, 39060, 45180, 45570, 46686, 49196, 52710, 54467, 54684, 61495, 63252, 68355, 70029, 73794, 77810, 79065, 91140, 93372, 105420, 108934, 110691, 116715, 122990, 136710, 140058, 147588, 155620, 158130, 163401, 184485, 217868, 221382, 233430, 245980, 272335, 273420, 280116, 316260, 326802, 350145, 368970, 381269, 442764, 466860, 490203, 544670, 553455, 653604, 700290, 737940, 762538, 817005, 980406, 1089340, 1106910, 1143807, 1400580, 1525076, 1634010, 1906345, 1960812, 2213820, 2287614, 2451015, 3268020, 3431421, 3812690, 4575228, 4902030, 5719035, 6862842, 7625380, 9804060, 11438070, 13725684, 17157105, 22876140, 34314210, 68628420]

約数ペア:

[(1, 68628420), (2, 34314210), (3, 22876140), (4, 17157105), (5, 13725684), (6, 11438070), (7, 9804060), (9, 7625380), (10, 6862842), (12, 5719035), (14, 4902030), (15, 4575228), (18, 3812690), (20, 3431421), (21, 3268020), (28, 2451015), (30, 2287614), (31, 2213820), (35, 1960812), (36, 1906345), (42, 1634010), (45, 1525076), (49, 1400580), (60, 1143807), (62, 1106910), (63, 1089340), (70, 980406), (84, 817005), (90, 762538), (93, 737940), (98, 700290), (105, 653604), (124, 553455), (126, 544670), (140, 490203), (147, 466860), (155, 442764), (180, 381269), (186, 368970), (196, 350145), (210, 326802), (217, 316260), (245, 280116), (251, 273420), (252, 272335), (279, 245980), (294, 233430), (310, 221382), (315, 217868), (372, 184485), (420, 163401), (434, 158130), (441, 155620), (465, 147588), (490, 140058), (502, 136710), (558, 122990), (588, 116715), (620, 110691), (630, 108934), (651, 105420), (735, 93372), (753, 91140), (868, 79065), (882, 77810), (930, 73794), (980, 70029), (1004, 68355), (1085, 63252), (1116, 61495), (1255, 54684), (1260, 54467), (1302, 52710), (1395, 49196), (1470, 46686), (1506, 45570), (1519, 45180), (1757, 39060), (1764, 38905), (1860, 36897), (1953, 35140), (2170, 31626), (2205, 31124), (2259, 30380), (2510, 27342), (2604, 26355), (2790, 24598), (2940, 23343), (3012, 22785), (3038, 22590), (3255, 21084), (3514, 19530), (3765, 18228), (3906, 17570), (4340, 15813), (4410, 15562), (4518, 15190), (4557, 15060), (5020, 13671), (5271, 13020), (5580, 12299), (6076, 11295), (6510, 10542), (7028, 9765), (7530, 9114), (7595, 9036), (7781, 8820), (7812, 8785)]