81299440

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{59779}}^1$

素因数の和:59809

約数の個数: 40

約数和(自身を含む): 200143440

約数和(自身を除く): 118844000

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 680, 1360, 59779, 119558, 239116, 298895, 478232, 597790, 956464, 1016243, 1195580, 2032486, 2391160, 4064972, 4782320, 5081215, 8129944, 10162430, 16259888, 20324860, 40649720, 81299440]

約数ペア:

[(1, 81299440), (2, 40649720), (4, 20324860), (5, 16259888), (8, 10162430), (10, 8129944), (16, 5081215), (17, 4782320), (20, 4064972), (34, 2391160), (40, 2032486), (68, 1195580), (80, 1016243), (85, 956464), (136, 597790), (170, 478232), (272, 298895), (340, 239116), (680, 119558), (1360, 59779)]