1265420

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{157}}^1$

素因数の和:210

約数の個数: 48

約数和(自身を含む): 2972928

約数和(自身を除く): 1707508

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 31, 52, 62, 65, 124, 130, 155, 157, 260, 310, 314, 403, 620, 628, 785, 806, 1570, 1612, 2015, 2041, 3140, 4030, 4082, 4867, 8060, 8164, 9734, 10205, 19468, 20410, 24335, 40820, 48670, 63271, 97340, 126542, 253084, 316355, 632710, 1265420]

約数ペア:

[(1, 1265420), (2, 632710), (4, 316355), (5, 253084), (10, 126542), (13, 97340), (20, 63271), (26, 48670), (31, 40820), (52, 24335), (62, 20410), (65, 19468), (124, 10205), (130, 9734), (155, 8164), (157, 8060), (260, 4867), (310, 4082), (314, 4030), (403, 3140), (620, 2041), (628, 2015), (785, 1612), (806, 1570)]