128024720

素因数分解:

$2^4\times 5^1\times {\mathrm{89}}^1\times {\mathrm{17981}}^1$

素因数の和:18083

約数の個数: 40

約数和(自身を含む): 301018680

約数和(自身を除く): 172993960

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 89, 178, 356, 445, 712, 890, 1424, 1780, 3560, 7120, 17981, 35962, 71924, 89905, 143848, 179810, 287696, 359620, 719240, 1438480, 1600309, 3200618, 6401236, 8001545, 12802472, 16003090, 25604944, 32006180, 64012360, 128024720]

約数ペア:

[(1, 128024720), (2, 64012360), (4, 32006180), (5, 25604944), (8, 16003090), (10, 12802472), (16, 8001545), (20, 6401236), (40, 3200618), (80, 1600309), (89, 1438480), (178, 719240), (356, 359620), (445, 287696), (712, 179810), (890, 143848), (1424, 89905), (1780, 71924), (3560, 35962), (7120, 17981)]