261409880

素因数分解:

$2^3\times 5^1\times {\mathrm{67}}^1\times {\mathrm{103}}^1\times {\mathrm{947}}^1$

素因数の和:1128

約数の個数: 64

約数和(自身を含む): 603383040

約数和(自身を除く): 341973160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 67, 103, 134, 206, 268, 335, 412, 515, 536, 670, 824, 947, 1030, 1340, 1894, 2060, 2680, 3788, 4120, 4735, 6901, 7576, 9470, 13802, 18940, 27604, 34505, 37880, 55208, 63449, 69010, 97541, 126898, 138020, 195082, 253796, 276040, 317245, 390164, 487705, 507592, 634490, 780328, 975410, 1268980, 1950820, 2537960, 3901640, 6535247, 13070494, 26140988, 32676235, 52281976, 65352470, 130704940, 261409880]

約数ペア:

[(1, 261409880), (2, 130704940), (4, 65352470), (5, 52281976), (8, 32676235), (10, 26140988), (20, 13070494), (40, 6535247), (67, 3901640), (103, 2537960), (134, 1950820), (206, 1268980), (268, 975410), (335, 780328), (412, 634490), (515, 507592), (536, 487705), (670, 390164), (824, 317245), (947, 276040), (1030, 253796), (1340, 195082), (1894, 138020), (2060, 126898), (2680, 97541), (3788, 69010), (4120, 63449), (4735, 55208), (6901, 37880), (7576, 34505), (9470, 27604), (13802, 18940)]