12918320

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{5209}}^1$

素因数の和:5253

約数の個数: 40

約数和(自身を含む): 31009920

約数和(自身を除く): 18091600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 5209, 10418, 20836, 26045, 41672, 52090, 83344, 104180, 161479, 208360, 322958, 416720, 645916, 807395, 1291832, 1614790, 2583664, 3229580, 6459160, 12918320]

約数ペア:

[(1, 12918320), (2, 6459160), (4, 3229580), (5, 2583664), (8, 1614790), (10, 1291832), (16, 807395), (20, 645916), (31, 416720), (40, 322958), (62, 208360), (80, 161479), (124, 104180), (155, 83344), (248, 52090), (310, 41672), (496, 26045), (620, 20836), (1240, 10418), (2480, 5209)]