215712880

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{86981}}^1$

素因数の和:87025

約数の個数: 40

約数和(自身を含む): 517716864

約数和(自身を除く): 302003984

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 86981, 173962, 347924, 434905, 695848, 869810, 1391696, 1739620, 2696411, 3479240, 5392822, 6958480, 10785644, 13482055, 21571288, 26964110, 43142576, 53928220, 107856440, 215712880]

約数ペア:

[(1, 215712880), (2, 107856440), (4, 53928220), (5, 43142576), (8, 26964110), (10, 21571288), (16, 13482055), (20, 10785644), (31, 6958480), (40, 5392822), (62, 3479240), (80, 2696411), (124, 1739620), (155, 1391696), (248, 869810), (310, 695848), (496, 434905), (620, 347924), (1240, 173962), (2480, 86981)]