81949720

素因数分解:

$2^3\times 5^1\times {\mathrm{1229}}^1\times {\mathrm{1667}}^1$

素因数の和:2907

約数の個数: 32

約数和(自身を含む): 184647600

約数和(自身を除く): 102697880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1229, 1667, 2458, 3334, 4916, 6145, 6668, 8335, 9832, 12290, 13336, 16670, 24580, 33340, 49160, 66680, 2048743, 4097486, 8194972, 10243715, 16389944, 20487430, 40974860, 81949720]

約数ペア:

[(1, 81949720), (2, 40974860), (4, 20487430), (5, 16389944), (8, 10243715), (10, 8194972), (20, 4097486), (40, 2048743), (1229, 66680), (1667, 49160), (2458, 33340), (3334, 24580), (4916, 16670), (6145, 13336), (6668, 12290), (8335, 9832)]