80256640

素因数分解:

$2^7\times 5^1\times {\mathrm{89}}^1\times {\mathrm{1409}}^1$

素因数の和:1517

約数の個数: 64

約数和(自身を含む): 194157000

約数和(自身を除く): 113900360

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 89, 128, 160, 178, 320, 356, 445, 640, 712, 890, 1409, 1424, 1780, 2818, 2848, 3560, 5636, 5696, 7045, 7120, 11272, 11392, 14090, 14240, 22544, 28180, 28480, 45088, 56360, 56960, 90176, 112720, 125401, 180352, 225440, 250802, 450880, 501604, 627005, 901760, 1003208, 1254010, 2006416, 2508020, 4012832, 5016040, 8025664, 10032080, 16051328, 20064160, 40128320, 80256640]

約数ペア:

[(1, 80256640), (2, 40128320), (4, 20064160), (5, 16051328), (8, 10032080), (10, 8025664), (16, 5016040), (20, 4012832), (32, 2508020), (40, 2006416), (64, 1254010), (80, 1003208), (89, 901760), (128, 627005), (160, 501604), (178, 450880), (320, 250802), (356, 225440), (445, 180352), (640, 125401), (712, 112720), (890, 90176), (1409, 56960), (1424, 56360), (1780, 45088), (2818, 28480), (2848, 28180), (3560, 22544), (5636, 14240), (5696, 14090), (7045, 11392), (7120, 11272)]