21274440

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{227}}^1$

素因数の和:323

約数の個数: 128

約数和(自身を含む): 70917120

約数和(自身を除く): 49642680

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 20, 22, 24, 30, 33, 40, 44, 55, 60, 66, 71, 88, 110, 120, 132, 142, 165, 213, 220, 227, 264, 284, 330, 355, 426, 440, 454, 568, 660, 681, 710, 781, 852, 908, 1065, 1135, 1320, 1362, 1420, 1562, 1704, 1816, 2130, 2270, 2343, 2497, 2724, 2840, 3124, 3405, 3905, 4260, 4540, 4686, 4994, 5448, 6248, 6810, 7491, 7810, 8520, 9080, 9372, 9988, 11715, 12485, 13620, 14982, 15620, 16117, 18744, 19976, 23430, 24970, 27240, 29964, 31240, 32234, 37455, 46860, 48351, 49940, 59928, 64468, 74910, 80585, 93720, 96702, 99880, 128936, 149820, 161170, 177287, 193404, 241755, 299640, 322340, 354574, 386808, 483510, 531861, 644680, 709148, 886435, 967020, 1063722, 1418296, 1772870, 1934040, 2127444, 2659305, 3545740, 4254888, 5318610, 7091480, 10637220, 21274440]

約数ペア:

[(1, 21274440), (2, 10637220), (3, 7091480), (4, 5318610), (5, 4254888), (6, 3545740), (8, 2659305), (10, 2127444), (11, 1934040), (12, 1772870), (15, 1418296), (20, 1063722), (22, 967020), (24, 886435), (30, 709148), (33, 644680), (40, 531861), (44, 483510), (55, 386808), (60, 354574), (66, 322340), (71, 299640), (88, 241755), (110, 193404), (120, 177287), (132, 161170), (142, 149820), (165, 128936), (213, 99880), (220, 96702), (227, 93720), (264, 80585), (284, 74910), (330, 64468), (355, 59928), (426, 49940), (440, 48351), (454, 46860), (568, 37455), (660, 32234), (681, 31240), (710, 29964), (781, 27240), (852, 24970), (908, 23430), (1065, 19976), (1135, 18744), (1320, 16117), (1362, 15620), (1420, 14982), (1562, 13620), (1704, 12485), (1816, 11715), (2130, 9988), (2270, 9372), (2343, 9080), (2497, 8520), (2724, 7810), (2840, 7491), (3124, 6810), (3405, 6248), (3905, 5448), (4260, 4994), (4540, 4686)]