668559580

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{409}}^1\times {\mathrm{6287}}^1$

素因数の和:6718

約数の個数: 48

約数和(自身を含む): 1515911040

約数和(自身を除く): 847351460

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 409, 818, 1636, 2045, 4090, 5317, 6287, 8180, 10634, 12574, 21268, 25148, 26585, 31435, 53170, 62870, 81731, 106340, 125740, 163462, 326924, 408655, 817310, 1634620, 2571383, 5142766, 10285532, 12856915, 25713830, 33427979, 51427660, 66855958, 133711916, 167139895, 334279790, 668559580]

約数ペア:

[(1, 668559580), (2, 334279790), (4, 167139895), (5, 133711916), (10, 66855958), (13, 51427660), (20, 33427979), (26, 25713830), (52, 12856915), (65, 10285532), (130, 5142766), (260, 2571383), (409, 1634620), (818, 817310), (1636, 408655), (2045, 326924), (4090, 163462), (5317, 125740), (6287, 106340), (8180, 81731), (10634, 62870), (12574, 53170), (21268, 31435), (25148, 26585)]