21008676

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{983}}^1$

素因数の和:1140

約数の個数: 48

約数和(自身を含む): 53230464

約数和(自身を除く): 32221788

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 137, 156, 274, 411, 548, 822, 983, 1644, 1781, 1966, 2949, 3562, 3932, 5343, 5898, 7124, 10686, 11796, 12779, 21372, 25558, 38337, 51116, 76674, 134671, 153348, 269342, 404013, 538684, 808026, 1616052, 1750723, 3501446, 5252169, 7002892, 10504338, 21008676]

約数ペア:

[(1, 21008676), (2, 10504338), (3, 7002892), (4, 5252169), (6, 3501446), (12, 1750723), (13, 1616052), (26, 808026), (39, 538684), (52, 404013), (78, 269342), (137, 153348), (156, 134671), (274, 76674), (411, 51116), (548, 38337), (822, 25558), (983, 21372), (1644, 12779), (1781, 11796), (1966, 10686), (2949, 7124), (3562, 5898), (3932, 5343)]