18953740

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{269}}^1\times {\mathrm{271}}^1$

素因数の和:562

約数の個数: 48

約数和(自身を含む): 43182720

約数和(自身を除く): 24228980

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 269, 271, 538, 542, 1076, 1084, 1345, 1355, 2690, 2710, 3497, 3523, 5380, 5420, 6994, 7046, 13988, 14092, 17485, 17615, 34970, 35230, 69940, 70460, 72899, 145798, 291596, 364495, 728990, 947687, 1457980, 1895374, 3790748, 4738435, 9476870, 18953740]

約数ペア:

[(1, 18953740), (2, 9476870), (4, 4738435), (5, 3790748), (10, 1895374), (13, 1457980), (20, 947687), (26, 728990), (52, 364495), (65, 291596), (130, 145798), (260, 72899), (269, 70460), (271, 69940), (538, 35230), (542, 34970), (1076, 17615), (1084, 17485), (1345, 14092), (1355, 13988), (2690, 7046), (2710, 6994), (3497, 5420), (3523, 5380)]