656943940

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^2\times {\mathrm{31}}^1\times {\mathrm{2003}}^1$

素因数の和:2089

約数の個数: 72

約数和(自身を含む): 1489436928

約数和(自身を除く): 832492988

約数列:

[1, 2, 4, 5, 10, 20, 23, 31, 46, 62, 92, 115, 124, 155, 230, 310, 460, 529, 620, 713, 1058, 1426, 2003, 2116, 2645, 2852, 3565, 4006, 5290, 7130, 8012, 10015, 10580, 14260, 16399, 20030, 32798, 40060, 46069, 62093, 65596, 81995, 92138, 124186, 163990, 184276, 230345, 248372, 310465, 327980, 460690, 620930, 921380, 1059587, 1241860, 1428139, 2119174, 2856278, 4238348, 5297935, 5712556, 7140695, 10595870, 14281390, 21191740, 28562780, 32847197, 65694394, 131388788, 164235985, 328471970, 656943940]

約数ペア:

[(1, 656943940), (2, 328471970), (4, 164235985), (5, 131388788), (10, 65694394), (20, 32847197), (23, 28562780), (31, 21191740), (46, 14281390), (62, 10595870), (92, 7140695), (115, 5712556), (124, 5297935), (155, 4238348), (230, 2856278), (310, 2119174), (460, 1428139), (529, 1241860), (620, 1059587), (713, 921380), (1058, 620930), (1426, 460690), (2003, 327980), (2116, 310465), (2645, 248372), (2852, 230345), (3565, 184276), (4006, 163990), (5290, 124186), (7130, 92138), (8012, 81995), (10015, 65596), (10580, 62093), (14260, 46069), (16399, 40060), (20030, 32798)]