21738440

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{373}}^1$

素因数の和:462

約数の個数: 64

約数和(自身を含む): 51701760

約数和(自身を除く): 29963320

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 47, 62, 94, 124, 155, 188, 235, 248, 310, 373, 376, 470, 620, 746, 940, 1240, 1457, 1492, 1865, 1880, 2914, 2984, 3730, 5828, 7285, 7460, 11563, 11656, 14570, 14920, 17531, 23126, 29140, 35062, 46252, 57815, 58280, 70124, 87655, 92504, 115630, 140248, 175310, 231260, 350620, 462520, 543461, 701240, 1086922, 2173844, 2717305, 4347688, 5434610, 10869220, 21738440]

約数ペア:

[(1, 21738440), (2, 10869220), (4, 5434610), (5, 4347688), (8, 2717305), (10, 2173844), (20, 1086922), (31, 701240), (40, 543461), (47, 462520), (62, 350620), (94, 231260), (124, 175310), (155, 140248), (188, 115630), (235, 92504), (248, 87655), (310, 70124), (373, 58280), (376, 57815), (470, 46252), (620, 35062), (746, 29140), (940, 23126), (1240, 17531), (1457, 14920), (1492, 14570), (1865, 11656), (1880, 11563), (2914, 7460), (2984, 7285), (3730, 5828)]