19438280

素因数分解:

$2^3\times 5^1\times {\mathrm{53}}^2\times {\mathrm{173}}^1$

素因数の和:290

約数の個数: 48

約数和(自身を含む): 44834580

約数和(自身を除く): 25396300

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 53, 106, 173, 212, 265, 346, 424, 530, 692, 865, 1060, 1384, 1730, 2120, 2809, 3460, 5618, 6920, 9169, 11236, 14045, 18338, 22472, 28090, 36676, 45845, 56180, 73352, 91690, 112360, 183380, 366760, 485957, 971914, 1943828, 2429785, 3887656, 4859570, 9719140, 19438280]

約数ペア:

[(1, 19438280), (2, 9719140), (4, 4859570), (5, 3887656), (8, 2429785), (10, 1943828), (20, 971914), (40, 485957), (53, 366760), (106, 183380), (173, 112360), (212, 91690), (265, 73352), (346, 56180), (424, 45845), (530, 36676), (692, 28090), (865, 22472), (1060, 18338), (1384, 14045), (1730, 11236), (2120, 9169), (2809, 6920), (3460, 5618)]