257942320

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{104009}}^1$

素因数の和:104053

約数の個数: 40

約数和(自身を含む): 619067520

約数和(自身を除く): 361125200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 104009, 208018, 416036, 520045, 832072, 1040090, 1664144, 2080180, 3224279, 4160360, 6448558, 8320720, 12897116, 16121395, 25794232, 32242790, 51588464, 64485580, 128971160, 257942320]

約数ペア:

[(1, 257942320), (2, 128971160), (4, 64485580), (5, 51588464), (8, 32242790), (10, 25794232), (16, 16121395), (20, 12897116), (31, 8320720), (40, 6448558), (62, 4160360), (80, 3224279), (124, 2080180), (155, 1664144), (248, 1040090), (310, 832072), (496, 520045), (620, 416036), (1240, 208018), (2480, 104009)]