20784660

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{26647}}^1$

素因数の和:26672

約数の個数: 48

約数和(自身を含む): 62676096

約数和(自身を除く): 41891436

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, 26647, 53294, 79941, 106588, 133235, 159882, 266470, 319764, 346411, 399705, 532940, 692822, 799410, 1039233, 1385644, 1598820, 1732055, 2078466, 3464110, 4156932, 5196165, 6928220, 10392330, 20784660]

約数ペア:

[(1, 20784660), (2, 10392330), (3, 6928220), (4, 5196165), (5, 4156932), (6, 3464110), (10, 2078466), (12, 1732055), (13, 1598820), (15, 1385644), (20, 1039233), (26, 799410), (30, 692822), (39, 532940), (52, 399705), (60, 346411), (65, 319764), (78, 266470), (130, 159882), (156, 133235), (195, 106588), (260, 79941), (390, 53294), (780, 26647)]