20641140

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{8821}}^1$

素因数の和:8849

約数の個数: 72

約数和(自身を含む): 67435368

約数和(自身を除く): 46794228

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, 8821, 17642, 26463, 35284, 44105, 52926, 79389, 88210, 105852, 114673, 132315, 158778, 176420, 229346, 264630, 317556, 344019, 396945, 458692, 529260, 573365, 688038, 793890, 1032057, 1146730, 1376076, 1587780, 1720095, 2064114, 2293460, 3440190, 4128228, 5160285, 6880380, 10320570, 20641140]

約数ペア:

[(1, 20641140), (2, 10320570), (3, 6880380), (4, 5160285), (5, 4128228), (6, 3440190), (9, 2293460), (10, 2064114), (12, 1720095), (13, 1587780), (15, 1376076), (18, 1146730), (20, 1032057), (26, 793890), (30, 688038), (36, 573365), (39, 529260), (45, 458692), (52, 396945), (60, 344019), (65, 317556), (78, 264630), (90, 229346), (117, 176420), (130, 158778), (156, 132315), (180, 114673), (195, 105852), (234, 88210), (260, 79389), (390, 52926), (468, 44105), (585, 35284), (780, 26463), (1170, 17642), (2340, 8821)]