820260

素因数分解:

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

素因数の和:63

約数の個数: 144

約数和(自身を含む): 3064320

約数和(自身を除く): 2244060

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 27, 28, 30, 31, 35, 36, 42, 45, 49, 54, 60, 62, 63, 70, 84, 90, 93, 98, 105, 108, 124, 126, 135, 140, 147, 155, 180, 186, 189, 196, 210, 217, 245, 252, 270, 279, 294, 310, 315, 372, 378, 420, 434, 441, 465, 490, 540, 558, 588, 620, 630, 651, 735, 756, 837, 868, 882, 930, 945, 980, 1085, 1116, 1260, 1302, 1323, 1395, 1470, 1519, 1674, 1764, 1860, 1890, 1953, 2170, 2205, 2604, 2646, 2790, 2940, 3038, 3255, 3348, 3780, 3906, 4185, 4340, 4410, 4557, 5292, 5580, 5859, 6076, 6510, 6615, 7595, 7812, 8370, 8820, 9114, 9765, 11718, 13020, 13230, 13671, 15190, 16740, 18228, 19530, 22785, 23436, 26460, 27342, 29295, 30380, 39060, 41013, 45570, 54684, 58590, 68355, 82026, 91140, 117180, 136710, 164052, 205065, 273420, 410130, 820260]

約数ペア:

[(1, 820260), (2, 410130), (3, 273420), (4, 205065), (5, 164052), (6, 136710), (7, 117180), (9, 91140), (10, 82026), (12, 68355), (14, 58590), (15, 54684), (18, 45570), (20, 41013), (21, 39060), (27, 30380), (28, 29295), (30, 27342), (31, 26460), (35, 23436), (36, 22785), (42, 19530), (45, 18228), (49, 16740), (54, 15190), (60, 13671), (62, 13230), (63, 13020), (70, 11718), (84, 9765), (90, 9114), (93, 8820), (98, 8370), (105, 7812), (108, 7595), (124, 6615), (126, 6510), (135, 6076), (140, 5859), (147, 5580), (155, 5292), (180, 4557), (186, 4410), (189, 4340), (196, 4185), (210, 3906), (217, 3780), (245, 3348), (252, 3255), (270, 3038), (279, 2940), (294, 2790), (310, 2646), (315, 2604), (372, 2205), (378, 2170), (420, 1953), (434, 1890), (441, 1860), (465, 1764), (490, 1674), (540, 1519), (558, 1470), (588, 1395), (620, 1323), (630, 1302), (651, 1260), (735, 1116), (756, 1085), (837, 980), (868, 945), (882, 930)]