18685940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{10267}}^1$

素因数の和:10296

約数の個数: 48

約数和(自身を含む): 48300672

約数和(自身を除く): 29614732

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 91, 130, 140, 182, 260, 364, 455, 910, 1820, 10267, 20534, 41068, 51335, 71869, 102670, 133471, 143738, 205340, 266942, 287476, 359345, 533884, 667355, 718690, 934297, 1334710, 1437380, 1868594, 2669420, 3737188, 4671485, 9342970, 18685940]

約数ペア:

[(1, 18685940), (2, 9342970), (4, 4671485), (5, 3737188), (7, 2669420), (10, 1868594), (13, 1437380), (14, 1334710), (20, 934297), (26, 718690), (28, 667355), (35, 533884), (52, 359345), (65, 287476), (70, 266942), (91, 205340), (130, 143738), (140, 133471), (182, 102670), (260, 71869), (364, 51335), (455, 41068), (910, 20534), (1820, 10267)]