20565480

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{13183}}^1$

素因数の和:13210

約数の個数: 64

約数和(自身を含む): 66447360

約数和(自身を除く): 45881880

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 26, 30, 39, 40, 52, 60, 65, 78, 104, 120, 130, 156, 195, 260, 312, 390, 520, 780, 1560, 13183, 26366, 39549, 52732, 65915, 79098, 105464, 131830, 158196, 171379, 197745, 263660, 316392, 342758, 395490, 514137, 527320, 685516, 790980, 856895, 1028274, 1371032, 1581960, 1713790, 2056548, 2570685, 3427580, 4113096, 5141370, 6855160, 10282740, 20565480]

約数ペア:

[(1, 20565480), (2, 10282740), (3, 6855160), (4, 5141370), (5, 4113096), (6, 3427580), (8, 2570685), (10, 2056548), (12, 1713790), (13, 1581960), (15, 1371032), (20, 1028274), (24, 856895), (26, 790980), (30, 685516), (39, 527320), (40, 514137), (52, 395490), (60, 342758), (65, 316392), (78, 263660), (104, 197745), (120, 171379), (130, 158196), (156, 131830), (195, 105464), (260, 79098), (312, 65915), (390, 52732), (520, 39549), (780, 26366), (1560, 13183)]