125320520

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{401}}^1\times {\mathrm{601}}^1$

素因数の和:1026

約数の個数: 64

約数和(自身を含む): 304925040

約数和(自身を除く): 179604520

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 401, 520, 601, 802, 1202, 1604, 2005, 2404, 3005, 3208, 4010, 4808, 5213, 6010, 7813, 8020, 10426, 12020, 15626, 16040, 20852, 24040, 26065, 31252, 39065, 41704, 52130, 62504, 78130, 104260, 156260, 208520, 241001, 312520, 482002, 964004, 1205005, 1928008, 2410010, 3133013, 4820020, 6266026, 9640040, 12532052, 15665065, 25064104, 31330130, 62660260, 125320520]

約数ペア:

[(1, 125320520), (2, 62660260), (4, 31330130), (5, 25064104), (8, 15665065), (10, 12532052), (13, 9640040), (20, 6266026), (26, 4820020), (40, 3133013), (52, 2410010), (65, 1928008), (104, 1205005), (130, 964004), (260, 482002), (401, 312520), (520, 241001), (601, 208520), (802, 156260), (1202, 104260), (1604, 78130), (2005, 62504), (2404, 52130), (3005, 41704), (3208, 39065), (4010, 31252), (4808, 26065), (5213, 24040), (6010, 20852), (7813, 16040), (8020, 15626), (10426, 12020)]