20348680

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{103}}^1\times {\mathrm{449}}^1$

素因数の和:574

約数の個数: 64

約数和(自身を含む): 50544000

約数和(自身を除く): 30195320

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 103, 110, 206, 220, 412, 440, 449, 515, 824, 898, 1030, 1133, 1796, 2060, 2245, 2266, 3592, 4120, 4490, 4532, 4939, 5665, 8980, 9064, 9878, 11330, 17960, 19756, 22660, 24695, 39512, 45320, 46247, 49390, 92494, 98780, 184988, 197560, 231235, 369976, 462470, 508717, 924940, 1017434, 1849880, 2034868, 2543585, 4069736, 5087170, 10174340, 20348680]

約数ペア:

[(1, 20348680), (2, 10174340), (4, 5087170), (5, 4069736), (8, 2543585), (10, 2034868), (11, 1849880), (20, 1017434), (22, 924940), (40, 508717), (44, 462470), (55, 369976), (88, 231235), (103, 197560), (110, 184988), (206, 98780), (220, 92494), (412, 49390), (440, 46247), (449, 45320), (515, 39512), (824, 24695), (898, 22660), (1030, 19756), (1133, 17960), (1796, 11330), (2060, 9878), (2245, 9064), (2266, 8980), (3592, 5665), (4120, 4939), (4490, 4532)]