81850920

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{40123}}^1$

素因数の和:40154

約数の個数: 64

約数和(自身を含む): 260003520

約数和(自身を除く): 178152600

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 17, 20, 24, 30, 34, 40, 51, 60, 68, 85, 102, 120, 136, 170, 204, 255, 340, 408, 510, 680, 1020, 2040, 40123, 80246, 120369, 160492, 200615, 240738, 320984, 401230, 481476, 601845, 682091, 802460, 962952, 1203690, 1364182, 1604920, 2046273, 2407380, 2728364, 3410455, 4092546, 4814760, 5456728, 6820910, 8185092, 10231365, 13641820, 16370184, 20462730, 27283640, 40925460, 81850920]

約数ペア:

[(1, 81850920), (2, 40925460), (3, 27283640), (4, 20462730), (5, 16370184), (6, 13641820), (8, 10231365), (10, 8185092), (12, 6820910), (15, 5456728), (17, 4814760), (20, 4092546), (24, 3410455), (30, 2728364), (34, 2407380), (40, 2046273), (51, 1604920), (60, 1364182), (68, 1203690), (85, 962952), (102, 802460), (120, 682091), (136, 601845), (170, 481476), (204, 401230), (255, 320984), (340, 240738), (408, 200615), (510, 160492), (680, 120369), (1020, 80246), (2040, 40123)]