20563560

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{239}}^2$

素因数の和:495

約数の個数: 72

約数和(自身を含む): 67112370

約数和(自身を除く): 46548810

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 30, 36, 40, 45, 60, 72, 90, 120, 180, 239, 360, 478, 717, 956, 1195, 1434, 1912, 2151, 2390, 2868, 3585, 4302, 4780, 5736, 7170, 8604, 9560, 10755, 14340, 17208, 21510, 28680, 43020, 57121, 86040, 114242, 171363, 228484, 285605, 342726, 456968, 514089, 571210, 685452, 856815, 1028178, 1142420, 1370904, 1713630, 2056356, 2284840, 2570445, 3427260, 4112712, 5140890, 6854520, 10281780, 20563560]

約数ペア:

[(1, 20563560), (2, 10281780), (3, 6854520), (4, 5140890), (5, 4112712), (6, 3427260), (8, 2570445), (9, 2284840), (10, 2056356), (12, 1713630), (15, 1370904), (18, 1142420), (20, 1028178), (24, 856815), (30, 685452), (36, 571210), (40, 514089), (45, 456968), (60, 342726), (72, 285605), (90, 228484), (120, 171363), (180, 114242), (239, 86040), (360, 57121), (478, 43020), (717, 28680), (956, 21510), (1195, 17208), (1434, 14340), (1912, 10755), (2151, 9560), (2390, 8604), (2868, 7170), (3585, 5736), (4302, 4780)]