21385336

素因数分解:

$2^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{101}}^1\times {\mathrm{199}}^1$

素因数の和:332

約数の個数: 64

約数和(自身を含む): 48960000

約数和(自身を除く): 27574664

約数列:

[1, 2, 4, 7, 8, 14, 19, 28, 38, 56, 76, 101, 133, 152, 199, 202, 266, 398, 404, 532, 707, 796, 808, 1064, 1393, 1414, 1592, 1919, 2786, 2828, 3781, 3838, 5572, 5656, 7562, 7676, 11144, 13433, 15124, 15352, 20099, 26467, 26866, 30248, 40198, 52934, 53732, 80396, 105868, 107464, 140693, 160792, 211736, 281386, 381881, 562772, 763762, 1125544, 1527524, 2673167, 3055048, 5346334, 10692668, 21385336]

約数ペア:

[(1, 21385336), (2, 10692668), (4, 5346334), (7, 3055048), (8, 2673167), (14, 1527524), (19, 1125544), (28, 763762), (38, 562772), (56, 381881), (76, 281386), (101, 211736), (133, 160792), (152, 140693), (199, 107464), (202, 105868), (266, 80396), (398, 53732), (404, 52934), (532, 40198), (707, 30248), (796, 26866), (808, 26467), (1064, 20099), (1393, 15352), (1414, 15124), (1592, 13433), (1919, 11144), (2786, 7676), (2828, 7562), (3781, 5656), (3838, 5572)]