28561780

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{2969}}^1$

素因数の和:3028

約数の個数: 48

約数和(自身を含む): 66361680

約数和(自身を除く): 37799900

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 37, 52, 65, 74, 130, 148, 185, 260, 370, 481, 740, 962, 1924, 2405, 2969, 4810, 5938, 9620, 11876, 14845, 29690, 38597, 59380, 77194, 109853, 154388, 192985, 219706, 385970, 439412, 549265, 771940, 1098530, 1428089, 2197060, 2856178, 5712356, 7140445, 14280890, 28561780]

約数ペア:

[(1, 28561780), (2, 14280890), (4, 7140445), (5, 5712356), (10, 2856178), (13, 2197060), (20, 1428089), (26, 1098530), (37, 771940), (52, 549265), (65, 439412), (74, 385970), (130, 219706), (148, 192985), (185, 154388), (260, 109853), (370, 77194), (481, 59380), (740, 38597), (962, 29690), (1924, 14845), (2405, 11876), (2969, 9620), (4810, 5938)]