20297784

素因数分解:

$2^3\times 3^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{971}}^1$

素因数の和:1060

約数の個数: 64

約数和(自身を含む): 55520640

約数和(自身を除く): 35222856

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 24, 26, 39, 52, 67, 78, 104, 134, 156, 201, 268, 312, 402, 536, 804, 871, 971, 1608, 1742, 1942, 2613, 2913, 3484, 3884, 5226, 5826, 6968, 7768, 10452, 11652, 12623, 20904, 23304, 25246, 37869, 50492, 65057, 75738, 100984, 130114, 151476, 195171, 260228, 302952, 390342, 520456, 780684, 845741, 1561368, 1691482, 2537223, 3382964, 5074446, 6765928, 10148892, 20297784]

約数ペア:

[(1, 20297784), (2, 10148892), (3, 6765928), (4, 5074446), (6, 3382964), (8, 2537223), (12, 1691482), (13, 1561368), (24, 845741), (26, 780684), (39, 520456), (52, 390342), (67, 302952), (78, 260228), (104, 195171), (134, 151476), (156, 130114), (201, 100984), (268, 75738), (312, 65057), (402, 50492), (536, 37869), (804, 25246), (871, 23304), (971, 20904), (1608, 12623), (1742, 11652), (1942, 10452), (2613, 7768), (2913, 6968), (3484, 5826), (3884, 5226)]