18693560

素因数分解:

$2^3\times 5^1\times {\mathrm{59}}^1\times {\mathrm{89}}^2$

素因数の和:248

約数の個数: 48

約数和(自身を含む): 43259400

約数和(自身を除く): 24565840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 59, 89, 118, 178, 236, 295, 356, 445, 472, 590, 712, 890, 1180, 1780, 2360, 3560, 5251, 7921, 10502, 15842, 21004, 26255, 31684, 39605, 42008, 52510, 63368, 79210, 105020, 158420, 210040, 316840, 467339, 934678, 1869356, 2336695, 3738712, 4673390, 9346780, 18693560]

約数ペア:

[(1, 18693560), (2, 9346780), (4, 4673390), (5, 3738712), (8, 2336695), (10, 1869356), (20, 934678), (40, 467339), (59, 316840), (89, 210040), (118, 158420), (178, 105020), (236, 79210), (295, 63368), (356, 52510), (445, 42008), (472, 39605), (590, 31684), (712, 26255), (890, 21004), (1180, 15842), (1780, 10502), (2360, 7921), (3560, 5251)]