18647120

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{73}}^1\times {\mathrm{103}}^1$

素因数の和:220

約数の個数: 80

約数和(自身を含む): 45806592

約数和(自身を除く): 27159472

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 73, 80, 103, 124, 146, 155, 206, 248, 292, 310, 365, 412, 496, 515, 584, 620, 730, 824, 1030, 1168, 1240, 1460, 1648, 2060, 2263, 2480, 2920, 3193, 4120, 4526, 5840, 6386, 7519, 8240, 9052, 11315, 12772, 15038, 15965, 18104, 22630, 25544, 30076, 31930, 36208, 37595, 45260, 51088, 60152, 63860, 75190, 90520, 120304, 127720, 150380, 181040, 233089, 255440, 300760, 466178, 601520, 932356, 1165445, 1864712, 2330890, 3729424, 4661780, 9323560, 18647120]

約数ペア:

[(1, 18647120), (2, 9323560), (4, 4661780), (5, 3729424), (8, 2330890), (10, 1864712), (16, 1165445), (20, 932356), (31, 601520), (40, 466178), (62, 300760), (73, 255440), (80, 233089), (103, 181040), (124, 150380), (146, 127720), (155, 120304), (206, 90520), (248, 75190), (292, 63860), (310, 60152), (365, 51088), (412, 45260), (496, 37595), (515, 36208), (584, 31930), (620, 30076), (730, 25544), (824, 22630), (1030, 18104), (1168, 15965), (1240, 15038), (1460, 12772), (1648, 11315), (2060, 9052), (2263, 8240), (2480, 7519), (2920, 6386), (3193, 5840), (4120, 4526)]