20015120

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{14717}}^1$

素因数の和:14747

約数の個数: 40

約数和(自身を含む): 49275864

約数和(自身を除く): 29260744

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 680, 1360, 14717, 29434, 58868, 73585, 117736, 147170, 235472, 250189, 294340, 500378, 588680, 1000756, 1177360, 1250945, 2001512, 2501890, 4003024, 5003780, 10007560, 20015120]

約数ペア:

[(1, 20015120), (2, 10007560), (4, 5003780), (5, 4003024), (8, 2501890), (10, 2001512), (16, 1250945), (17, 1177360), (20, 1000756), (34, 588680), (40, 500378), (68, 294340), (80, 250189), (85, 235472), (136, 147170), (170, 117736), (272, 73585), (340, 58868), (680, 29434), (1360, 14717)]