81847120

素因数分解:

$2^4\times 5^1\times {\mathrm{227}}^1\times {\mathrm{4507}}^1$

素因数の和:4747

約数の個数: 40

約数和(自身を含む): 191175264

約数和(自身を除く): 109328144

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 227, 454, 908, 1135, 1816, 2270, 3632, 4507, 4540, 9014, 9080, 18028, 18160, 22535, 36056, 45070, 72112, 90140, 180280, 360560, 1023089, 2046178, 4092356, 5115445, 8184712, 10230890, 16369424, 20461780, 40923560, 81847120]

約数ペア:

[(1, 81847120), (2, 40923560), (4, 20461780), (5, 16369424), (8, 10230890), (10, 8184712), (16, 5115445), (20, 4092356), (40, 2046178), (80, 1023089), (227, 360560), (454, 180280), (908, 90140), (1135, 72112), (1816, 45070), (2270, 36056), (3632, 22535), (4507, 18160), (4540, 18028), (9014, 9080)]