21154588

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{653}}^1$

素因数の和:766

約数の個数: 48

約数和(自身を含む): 46146240

約数和(自身を除く): 24991652

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 52, 89, 91, 178, 182, 356, 364, 623, 653, 1157, 1246, 1306, 2314, 2492, 2612, 4571, 4628, 8099, 8489, 9142, 16198, 16978, 18284, 32396, 33956, 58117, 59423, 116234, 118846, 232468, 237692, 406819, 755521, 813638, 1511042, 1627276, 3022084, 5288647, 10577294, 21154588]

約数ペア:

[(1, 21154588), (2, 10577294), (4, 5288647), (7, 3022084), (13, 1627276), (14, 1511042), (26, 813638), (28, 755521), (52, 406819), (89, 237692), (91, 232468), (178, 118846), (182, 116234), (356, 59423), (364, 58117), (623, 33956), (653, 32396), (1157, 18284), (1246, 16978), (1306, 16198), (2314, 9142), (2492, 8489), (2612, 8099), (4571, 4628)]