18007900

素因数分解:

$2^2\times 5^2\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{157}}^1$

素因数の和:239

約数の個数: 72

約数和(自身を含む): 41691776

約数和(自身を除く): 23683876

約数列:

[1, 2, 4, 5, 10, 20, 25, 31, 37, 50, 62, 74, 100, 124, 148, 155, 157, 185, 310, 314, 370, 620, 628, 740, 775, 785, 925, 1147, 1550, 1570, 1850, 2294, 3100, 3140, 3700, 3925, 4588, 4867, 5735, 5809, 7850, 9734, 11470, 11618, 15700, 19468, 22940, 23236, 24335, 28675, 29045, 48670, 57350, 58090, 97340, 114700, 116180, 121675, 145225, 180079, 243350, 290450, 360158, 486700, 580900, 720316, 900395, 1800790, 3601580, 4501975, 9003950, 18007900]

約数ペア:

[(1, 18007900), (2, 9003950), (4, 4501975), (5, 3601580), (10, 1800790), (20, 900395), (25, 720316), (31, 580900), (37, 486700), (50, 360158), (62, 290450), (74, 243350), (100, 180079), (124, 145225), (148, 121675), (155, 116180), (157, 114700), (185, 97340), (310, 58090), (314, 57350), (370, 48670), (620, 29045), (628, 28675), (740, 24335), (775, 23236), (785, 22940), (925, 19468), (1147, 15700), (1550, 11618), (1570, 11470), (1850, 9734), (2294, 7850), (3100, 5809), (3140, 5735), (3700, 4867), (3925, 4588)]