21771540

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{467}}^1$

素因数の和:526

約数の個数: 144

約数和(自身を含む): 77680512

約数和(自身を除く): 55908972

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 37, 42, 45, 60, 63, 70, 74, 84, 90, 105, 111, 126, 140, 148, 180, 185, 210, 222, 252, 259, 315, 333, 370, 420, 444, 467, 518, 555, 630, 666, 740, 777, 934, 1036, 1110, 1260, 1295, 1332, 1401, 1554, 1665, 1868, 2220, 2331, 2335, 2590, 2802, 3108, 3269, 3330, 3885, 4203, 4662, 4670, 5180, 5604, 6538, 6660, 7005, 7770, 8406, 9324, 9340, 9807, 11655, 13076, 14010, 15540, 16345, 16812, 17279, 19614, 21015, 23310, 28020, 29421, 32690, 34558, 39228, 42030, 46620, 49035, 51837, 58842, 65380, 69116, 84060, 86395, 98070, 103674, 117684, 120953, 147105, 155511, 172790, 196140, 207348, 241906, 259185, 294210, 311022, 345580, 362859, 483812, 518370, 588420, 604765, 622044, 725718, 777555, 1036740, 1088577, 1209530, 1451436, 1555110, 1814295, 2177154, 2419060, 3110220, 3628590, 4354308, 5442885, 7257180, 10885770, 21771540]

約数ペア:

[(1, 21771540), (2, 10885770), (3, 7257180), (4, 5442885), (5, 4354308), (6, 3628590), (7, 3110220), (9, 2419060), (10, 2177154), (12, 1814295), (14, 1555110), (15, 1451436), (18, 1209530), (20, 1088577), (21, 1036740), (28, 777555), (30, 725718), (35, 622044), (36, 604765), (37, 588420), (42, 518370), (45, 483812), (60, 362859), (63, 345580), (70, 311022), (74, 294210), (84, 259185), (90, 241906), (105, 207348), (111, 196140), (126, 172790), (140, 155511), (148, 147105), (180, 120953), (185, 117684), (210, 103674), (222, 98070), (252, 86395), (259, 84060), (315, 69116), (333, 65380), (370, 58842), (420, 51837), (444, 49035), (467, 46620), (518, 42030), (555, 39228), (630, 34558), (666, 32690), (740, 29421), (777, 28020), (934, 23310), (1036, 21015), (1110, 19614), (1260, 17279), (1295, 16812), (1332, 16345), (1401, 15540), (1554, 14010), (1665, 13076), (1868, 11655), (2220, 9807), (2331, 9340), (2335, 9324), (2590, 8406), (2802, 7770), (3108, 7005), (3269, 6660), (3330, 6538), (3885, 5604), (4203, 5180), (4662, 4670)]