20589040

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{15139}}^1$

素因数の和:15169

約数の個数: 40

約数和(自身を含む): 50688720

約数和(自身を除く): 30099680

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 680, 1360, 15139, 30278, 60556, 75695, 121112, 151390, 242224, 257363, 302780, 514726, 605560, 1029452, 1211120, 1286815, 2058904, 2573630, 4117808, 5147260, 10294520, 20589040]

約数ペア:

[(1, 20589040), (2, 10294520), (4, 5147260), (5, 4117808), (8, 2573630), (10, 2058904), (16, 1286815), (17, 1211120), (20, 1029452), (34, 605560), (40, 514726), (68, 302780), (80, 257363), (85, 242224), (136, 151390), (170, 121112), (272, 75695), (340, 60556), (680, 30278), (1360, 15139)]