87705040

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{64489}}^1$

素因数の和:64519

約数の個数: 40

約数和(自身を含む): 215912520

約数和(自身を除く): 128207480

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 680, 1360, 64489, 128978, 257956, 322445, 515912, 644890, 1031824, 1096313, 1289780, 2192626, 2579560, 4385252, 5159120, 5481565, 8770504, 10963130, 17541008, 21926260, 43852520, 87705040]

約数ペア:

[(1, 87705040), (2, 43852520), (4, 21926260), (5, 17541008), (8, 10963130), (10, 8770504), (16, 5481565), (17, 5159120), (20, 4385252), (34, 2579560), (40, 2192626), (68, 1289780), (80, 1096313), (85, 1031824), (136, 644890), (170, 515912), (272, 322445), (340, 257956), (680, 128978), (1360, 64489)]