81313040

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^2\times {\mathrm{3517}}^1$

素因数の和:3564

約数の個数: 60

約数和(自身を含む): 200884836

約数和(自身を除く): 119571796

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 289, 340, 578, 680, 1156, 1360, 1445, 2312, 2890, 3517, 4624, 5780, 7034, 11560, 14068, 17585, 23120, 28136, 35170, 56272, 59789, 70340, 119578, 140680, 239156, 281360, 298945, 478312, 597890, 956624, 1016413, 1195780, 2032826, 2391560, 4065652, 4783120, 5082065, 8131304, 10164130, 16262608, 20328260, 40656520, 81313040]

約数ペア:

[(1, 81313040), (2, 40656520), (4, 20328260), (5, 16262608), (8, 10164130), (10, 8131304), (16, 5082065), (17, 4783120), (20, 4065652), (34, 2391560), (40, 2032826), (68, 1195780), (80, 1016413), (85, 956624), (136, 597890), (170, 478312), (272, 298945), (289, 281360), (340, 239156), (578, 140680), (680, 119578), (1156, 70340), (1360, 59789), (1445, 56272), (2312, 35170), (2890, 28136), (3517, 23120), (4624, 17585), (5780, 14068), (7034, 11560)]