20701640

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{27239}}^1$

素因数の和:27269

約数の個数: 32

約数和(自身を含む): 49032000

約数和(自身を除く): 28330360

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 380, 760, 27239, 54478, 108956, 136195, 217912, 272390, 517541, 544780, 1035082, 1089560, 2070164, 2587705, 4140328, 5175410, 10350820, 20701640]

約数ペア:

[(1, 20701640), (2, 10350820), (4, 5175410), (5, 4140328), (8, 2587705), (10, 2070164), (19, 1089560), (20, 1035082), (38, 544780), (40, 517541), (76, 272390), (95, 217912), (152, 136195), (190, 108956), (380, 54478), (760, 27239)]