280014320

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{112909}}^1$

素因数の和:112953

約数の個数: 40

約数和(自身を含む): 672040320

約数和(自身を除く): 392026000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 112909, 225818, 451636, 564545, 903272, 1129090, 1806544, 2258180, 3500179, 4516360, 7000358, 9032720, 14000716, 17500895, 28001432, 35001790, 56002864, 70003580, 140007160, 280014320]

約数ペア:

[(1, 280014320), (2, 140007160), (4, 70003580), (5, 56002864), (8, 35001790), (10, 28001432), (16, 17500895), (20, 14000716), (31, 9032720), (40, 7000358), (62, 4516360), (80, 3500179), (124, 2258180), (155, 1806544), (248, 1129090), (310, 903272), (496, 564545), (620, 451636), (1240, 225818), (2480, 112909)]