645420

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{347}}^1$

素因数の和:390

約数の個数: 48

約数和(自身を含む): 1870848

約数和(自身を除く): 1225428

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 31, 60, 62, 93, 124, 155, 186, 310, 347, 372, 465, 620, 694, 930, 1041, 1388, 1735, 1860, 2082, 3470, 4164, 5205, 6940, 10410, 10757, 20820, 21514, 32271, 43028, 53785, 64542, 107570, 129084, 161355, 215140, 322710, 645420]

約数ペア:

[(1, 645420), (2, 322710), (3, 215140), (4, 161355), (5, 129084), (6, 107570), (10, 64542), (12, 53785), (15, 43028), (20, 32271), (30, 21514), (31, 20820), (60, 10757), (62, 10410), (93, 6940), (124, 5205), (155, 4164), (186, 3470), (310, 2082), (347, 1860), (372, 1735), (465, 1388), (620, 1041), (694, 930)]