81305120

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{39089}}^1$

素因数の和:39117

約数の個数: 48

約数和(自身を含む): 206864280

約数和(自身を除く): 125559160

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 65, 80, 104, 130, 160, 208, 260, 416, 520, 1040, 2080, 39089, 78178, 156356, 195445, 312712, 390890, 508157, 625424, 781780, 1016314, 1250848, 1563560, 2032628, 2540785, 3127120, 4065256, 5081570, 6254240, 8130512, 10163140, 16261024, 20326280, 40652560, 81305120]

約数ペア:

[(1, 81305120), (2, 40652560), (4, 20326280), (5, 16261024), (8, 10163140), (10, 8130512), (13, 6254240), (16, 5081570), (20, 4065256), (26, 3127120), (32, 2540785), (40, 2032628), (52, 1563560), (65, 1250848), (80, 1016314), (104, 781780), (130, 625424), (160, 508157), (208, 390890), (260, 312712), (416, 195445), (520, 156356), (1040, 78178), (2080, 39089)]