20808624560

素因数分解:

$2^4\times 5^1\times {\mathrm{83}}^1\times {\mathrm{113}}^1\times {\mathrm{27733}}^1$

素因数の和:27942

約数の個数: 80

約数和(自身を含む): 49398025824

約数和(自身を除く): 28589401264

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 83, 113, 166, 226, 332, 415, 452, 565, 664, 830, 904, 1130, 1328, 1660, 1808, 2260, 3320, 4520, 6640, 9040, 9379, 18758, 27733, 37516, 46895, 55466, 75032, 93790, 110932, 138665, 150064, 187580, 221864, 277330, 375160, 443728, 554660, 750320, 1109320, 2218640, 2301839, 3133829, 4603678, 6267658, 9207356, 11509195, 12535316, 15669145, 18414712, 23018390, 25070632, 31338290, 36829424, 46036780, 50141264, 62676580, 92073560, 125353160, 184147120, 250706320, 260107807, 520215614, 1040431228, 1300539035, 2080862456, 2601078070, 4161724912, 5202156140, 10404312280, 20808624560]

約数ペア:

[(1, 20808624560), (2, 10404312280), (4, 5202156140), (5, 4161724912), (8, 2601078070), (10, 2080862456), (16, 1300539035), (20, 1040431228), (40, 520215614), (80, 260107807), (83, 250706320), (113, 184147120), (166, 125353160), (226, 92073560), (332, 62676580), (415, 50141264), (452, 46036780), (565, 36829424), (664, 31338290), (830, 25070632), (904, 23018390), (1130, 18414712), (1328, 15669145), (1660, 12535316), (1808, 11509195), (2260, 9207356), (3320, 6267658), (4520, 4603678), (6640, 3133829), (9040, 2301839), (9379, 2218640), (18758, 1109320), (27733, 750320), (37516, 554660), (46895, 443728), (55466, 375160), (75032, 277330), (93790, 221864), (110932, 187580), (138665, 150064)]