19758050

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{113}}^1\times {\mathrm{269}}^1$

素因数の和:407

約数の個数: 48

約数和(自身を含む): 40075560

約数和(自身を除く): 20317510

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 113, 130, 226, 269, 325, 538, 565, 650, 1130, 1345, 1469, 2690, 2825, 2938, 3497, 5650, 6725, 6994, 7345, 13450, 14690, 17485, 30397, 34970, 36725, 60794, 73450, 87425, 151985, 174850, 303970, 395161, 759925, 790322, 1519850, 1975805, 3951610, 9879025, 19758050]

約数ペア:

[(1, 19758050), (2, 9879025), (5, 3951610), (10, 1975805), (13, 1519850), (25, 790322), (26, 759925), (50, 395161), (65, 303970), (113, 174850), (130, 151985), (226, 87425), (269, 73450), (325, 60794), (538, 36725), (565, 34970), (650, 30397), (1130, 17485), (1345, 14690), (1469, 13450), (2690, 7345), (2825, 6994), (2938, 6725), (3497, 5650)]