20643210

素因数分解:

$2^1\times 3^2\times 5^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{151}}^1$

素因数の和:209

約数の個数: 144

約数和(自身を含む): 64876032

約数和(自身を除く): 44232822

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 30, 31, 35, 42, 45, 49, 62, 63, 70, 90, 93, 98, 105, 126, 147, 151, 155, 186, 210, 217, 245, 279, 294, 302, 310, 315, 434, 441, 453, 465, 490, 558, 630, 651, 735, 755, 882, 906, 930, 1057, 1085, 1302, 1359, 1395, 1470, 1510, 1519, 1953, 2114, 2170, 2205, 2265, 2718, 2790, 3038, 3171, 3255, 3906, 4410, 4530, 4557, 4681, 5285, 6342, 6510, 6795, 7399, 7595, 9114, 9362, 9513, 9765, 10570, 13590, 13671, 14043, 14798, 15190, 15855, 19026, 19530, 22197, 22785, 23405, 27342, 28086, 31710, 32767, 36995, 42129, 44394, 45570, 46810, 47565, 65534, 66591, 68355, 70215, 73990, 84258, 95130, 98301, 110985, 133182, 136710, 140430, 163835, 196602, 210645, 221970, 229369, 294903, 327670, 332955, 421290, 458738, 491505, 589806, 665910, 688107, 983010, 1146845, 1376214, 1474515, 2064321, 2293690, 2949030, 3440535, 4128642, 6881070, 10321605, 20643210]

約数ペア:

[(1, 20643210), (2, 10321605), (3, 6881070), (5, 4128642), (6, 3440535), (7, 2949030), (9, 2293690), (10, 2064321), (14, 1474515), (15, 1376214), (18, 1146845), (21, 983010), (30, 688107), (31, 665910), (35, 589806), (42, 491505), (45, 458738), (49, 421290), (62, 332955), (63, 327670), (70, 294903), (90, 229369), (93, 221970), (98, 210645), (105, 196602), (126, 163835), (147, 140430), (151, 136710), (155, 133182), (186, 110985), (210, 98301), (217, 95130), (245, 84258), (279, 73990), (294, 70215), (302, 68355), (310, 66591), (315, 65534), (434, 47565), (441, 46810), (453, 45570), (465, 44394), (490, 42129), (558, 36995), (630, 32767), (651, 31710), (735, 28086), (755, 27342), (882, 23405), (906, 22785), (930, 22197), (1057, 19530), (1085, 19026), (1302, 15855), (1359, 15190), (1395, 14798), (1470, 14043), (1510, 13671), (1519, 13590), (1953, 10570), (2114, 9765), (2170, 9513), (2205, 9362), (2265, 9114), (2718, 7595), (2790, 7399), (3038, 6795), (3171, 6510), (3255, 6342), (3906, 5285), (4410, 4681), (4530, 4557)]