20457684

素因数分解:

$2^2\times 3^5\times {\mathrm{13}}^1\times {\mathrm{1619}}^1$

素因数の和:1651

約数の個数: 72

約数和(自身を含む): 57788640

約数和(自身を除く): 37330956

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 27, 36, 39, 52, 54, 78, 81, 108, 117, 156, 162, 234, 243, 324, 351, 468, 486, 702, 972, 1053, 1404, 1619, 2106, 3159, 3238, 4212, 4857, 6318, 6476, 9714, 12636, 14571, 19428, 21047, 29142, 42094, 43713, 58284, 63141, 84188, 87426, 126282, 131139, 174852, 189423, 252564, 262278, 378846, 393417, 524556, 568269, 757692, 786834, 1136538, 1573668, 1704807, 2273076, 3409614, 5114421, 6819228, 10228842, 20457684]

約数ペア:

[(1, 20457684), (2, 10228842), (3, 6819228), (4, 5114421), (6, 3409614), (9, 2273076), (12, 1704807), (13, 1573668), (18, 1136538), (26, 786834), (27, 757692), (36, 568269), (39, 524556), (52, 393417), (54, 378846), (78, 262278), (81, 252564), (108, 189423), (117, 174852), (156, 131139), (162, 126282), (234, 87426), (243, 84188), (324, 63141), (351, 58284), (468, 43713), (486, 42094), (702, 29142), (972, 21047), (1053, 19428), (1404, 14571), (1619, 12636), (2106, 9714), (3159, 6476), (3238, 6318), (4212, 4857)]