20285460

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{8669}}^1$

素因数の和:8697

約数の個数: 72

約数和(自身を含む): 66273480

約数和(自身を除く): 45988020

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 26, 30, 36, 39, 45, 52, 60, 65, 78, 90, 117, 130, 156, 180, 195, 234, 260, 390, 468, 585, 780, 1170, 2340, 8669, 17338, 26007, 34676, 43345, 52014, 78021, 86690, 104028, 112697, 130035, 156042, 173380, 225394, 260070, 312084, 338091, 390105, 450788, 520140, 563485, 676182, 780210, 1014273, 1126970, 1352364, 1560420, 1690455, 2028546, 2253940, 3380910, 4057092, 5071365, 6761820, 10142730, 20285460]

約数ペア:

[(1, 20285460), (2, 10142730), (3, 6761820), (4, 5071365), (5, 4057092), (6, 3380910), (9, 2253940), (10, 2028546), (12, 1690455), (13, 1560420), (15, 1352364), (18, 1126970), (20, 1014273), (26, 780210), (30, 676182), (36, 563485), (39, 520140), (45, 450788), (52, 390105), (60, 338091), (65, 312084), (78, 260070), (90, 225394), (117, 173380), (130, 156042), (156, 130035), (180, 112697), (195, 104028), (234, 86690), (260, 78021), (390, 52014), (468, 43345), (585, 34676), (780, 26007), (1170, 17338), (2340, 8669)]