21023340

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{26953}}^1$

素因数の和:26978

約数の個数: 48

約数和(自身を含む): 63395808

約数和(自身を除く): 42372468

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 26953, 53906, 80859, 107812, 134765, 161718, 269530, 323436, 350389, 404295, 539060, 700778, 808590, 1051167, 1401556, 1617180, 1751945, 2102334, 3503890, 4204668, 5255835, 7007780, 10511670, 21023340]

約数ペア:

[(1, 21023340), (2, 10511670), (3, 7007780), (4, 5255835), (5, 4204668), (6, 3503890), (10, 2102334), (12, 1751945), (13, 1617180), (15, 1401556), (20, 1051167), (26, 808590), (30, 700778), (39, 539060), (52, 404295), (60, 350389), (65, 323436), (78, 269530), (130, 161718), (156, 134765), (195, 107812), (260, 80859), (390, 53906), (780, 26953)]