721485380

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{431}}^1\times {\mathrm{1087}}^1$

素因数の和:1545

約数の個数: 96

約数和(自身を含む): 1895104512

約数和(自身を除く): 1173619132

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 220, 308, 385, 431, 770, 862, 1087, 1540, 1724, 2155, 2174, 3017, 4310, 4348, 4741, 5435, 6034, 7609, 8620, 9482, 10870, 11957, 12068, 15085, 15218, 18964, 21740, 23705, 23914, 30170, 30436, 33187, 38045, 47410, 47828, 59785, 60340, 66374, 76090, 83699, 94820, 119570, 132748, 152180, 165935, 167398, 239140, 331870, 334796, 418495, 468497, 663740, 836990, 936994, 1673980, 1873988, 2342485, 3279479, 4684970, 5153467, 6558958, 9369940, 10306934, 13117916, 16397395, 20613868, 25767335, 32794790, 36074269, 51534670, 65589580, 72148538, 103069340, 144297076, 180371345, 360742690, 721485380]

約数ペア:

[(1, 721485380), (2, 360742690), (4, 180371345), (5, 144297076), (7, 103069340), (10, 72148538), (11, 65589580), (14, 51534670), (20, 36074269), (22, 32794790), (28, 25767335), (35, 20613868), (44, 16397395), (55, 13117916), (70, 10306934), (77, 9369940), (110, 6558958), (140, 5153467), (154, 4684970), (220, 3279479), (308, 2342485), (385, 1873988), (431, 1673980), (770, 936994), (862, 836990), (1087, 663740), (1540, 468497), (1724, 418495), (2155, 334796), (2174, 331870), (3017, 239140), (4310, 167398), (4348, 165935), (4741, 152180), (5435, 132748), (6034, 119570), (7609, 94820), (8620, 83699), (9482, 76090), (10870, 66374), (11957, 60340), (12068, 59785), (15085, 47828), (15218, 47410), (18964, 38045), (21740, 33187), (23705, 30436), (23914, 30170)]