19505120

素因数分解:

$2^5\times 5^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{101}}^1$

素因数の和:204

約数の個数: 96

約数和(自身を含む): 49968576

約数和(自身を除く): 30463456

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 68, 71, 80, 85, 101, 136, 142, 160, 170, 202, 272, 284, 340, 355, 404, 505, 544, 568, 680, 710, 808, 1010, 1136, 1207, 1360, 1420, 1616, 1717, 2020, 2272, 2414, 2720, 2840, 3232, 3434, 4040, 4828, 5680, 6035, 6868, 7171, 8080, 8585, 9656, 11360, 12070, 13736, 14342, 16160, 17170, 19312, 24140, 27472, 28684, 34340, 35855, 38624, 48280, 54944, 57368, 68680, 71710, 96560, 114736, 121907, 137360, 143420, 193120, 229472, 243814, 274720, 286840, 487628, 573680, 609535, 975256, 1147360, 1219070, 1950512, 2438140, 3901024, 4876280, 9752560, 19505120]

約数ペア:

[(1, 19505120), (2, 9752560), (4, 4876280), (5, 3901024), (8, 2438140), (10, 1950512), (16, 1219070), (17, 1147360), (20, 975256), (32, 609535), (34, 573680), (40, 487628), (68, 286840), (71, 274720), (80, 243814), (85, 229472), (101, 193120), (136, 143420), (142, 137360), (160, 121907), (170, 114736), (202, 96560), (272, 71710), (284, 68680), (340, 57368), (355, 54944), (404, 48280), (505, 38624), (544, 35855), (568, 34340), (680, 28684), (710, 27472), (808, 24140), (1010, 19312), (1136, 17170), (1207, 16160), (1360, 14342), (1420, 13736), (1616, 12070), (1717, 11360), (2020, 9656), (2272, 8585), (2414, 8080), (2720, 7171), (2840, 6868), (3232, 6035), (3434, 5680), (4040, 4828)]