18802420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{10331}}^1$

素因数の和:10360

約数の個数: 48

約数和(自身を含む): 48601728

約数和(自身を除く): 29799308

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, 10331, 20662, 41324, 51655, 72317, 103310, 134303, 144634, 206620, 268606, 289268, 361585, 537212, 671515, 723170, 940121, 1343030, 1446340, 1880242, 2686060, 3760484, 4700605, 9401210, 18802420]

約数ペア:

[(1, 18802420), (2, 9401210), (4, 4700605), (5, 3760484), (7, 2686060), (10, 1880242), (13, 1446340), (14, 1343030), (20, 940121), (26, 723170), (28, 671515), (35, 537212), (52, 361585), (65, 289268), (70, 268606), (91, 206620), (130, 144634), (140, 134303), (182, 103310), (260, 72317), (364, 51655), (455, 41324), (910, 20662), (1820, 10331)]