21000584560

素因数分解:

$2^4\times 5^1\times {\mathrm{1583}}^1\times {\mathrm{165829}}^1$

素因数の和:167425

約数の個数: 40

約数和(自身を含む): 48857497920

約数和(自身を除く): 27856913360

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1583, 3166, 6332, 7915, 12664, 15830, 25328, 31660, 63320, 126640, 165829, 331658, 663316, 829145, 1326632, 1658290, 2653264, 3316580, 6633160, 13266320, 262507307, 525014614, 1050029228, 1312536535, 2100058456, 2625073070, 4200116912, 5250146140, 10500292280, 21000584560]

約数ペア:

[(1, 21000584560), (2, 10500292280), (4, 5250146140), (5, 4200116912), (8, 2625073070), (10, 2100058456), (16, 1312536535), (20, 1050029228), (40, 525014614), (80, 262507307), (1583, 13266320), (3166, 6633160), (6332, 3316580), (7915, 2653264), (12664, 1658290), (15830, 1326632), (25328, 829145), (31660, 663316), (63320, 331658), (126640, 165829)]