8123920

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{163}}^1$

素因数の和:272

約数の個数: 80

約数和(自身を含む): 21962880

約数和(自身を除く): 13838960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 89, 112, 140, 163, 178, 280, 326, 356, 445, 560, 623, 652, 712, 815, 890, 1141, 1246, 1304, 1424, 1630, 1780, 2282, 2492, 2608, 3115, 3260, 3560, 4564, 4984, 5705, 6230, 6520, 7120, 9128, 9968, 11410, 12460, 13040, 14507, 18256, 22820, 24920, 29014, 45640, 49840, 58028, 72535, 91280, 101549, 116056, 145070, 203098, 232112, 290140, 406196, 507745, 580280, 812392, 1015490, 1160560, 1624784, 2030980, 4061960, 8123920]

約数ペア:

[(1, 8123920), (2, 4061960), (4, 2030980), (5, 1624784), (7, 1160560), (8, 1015490), (10, 812392), (14, 580280), (16, 507745), (20, 406196), (28, 290140), (35, 232112), (40, 203098), (56, 145070), (70, 116056), (80, 101549), (89, 91280), (112, 72535), (140, 58028), (163, 49840), (178, 45640), (280, 29014), (326, 24920), (356, 22820), (445, 18256), (560, 14507), (623, 13040), (652, 12460), (712, 11410), (815, 9968), (890, 9128), (1141, 7120), (1246, 6520), (1304, 6230), (1424, 5705), (1630, 4984), (1780, 4564), (2282, 3560), (2492, 3260), (2608, 3115)]