20131471760

素因数分解:

$2^4\times 5^1\times {\mathrm{263}}^1\times {\mathrm{449}}^1\times {\mathrm{2131}}^1$

素因数の和:2856

約数の個数: 80

約数和(自身を含む): 47110377600

約数和(自身を除く): 26978905840

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 263, 449, 526, 898, 1052, 1315, 1796, 2104, 2131, 2245, 2630, 3592, 4208, 4262, 4490, 5260, 7184, 8524, 8980, 10520, 10655, 17048, 17960, 21040, 21310, 34096, 35920, 42620, 85240, 118087, 170480, 236174, 472348, 560453, 590435, 944696, 956819, 1120906, 1180870, 1889392, 1913638, 2241812, 2361740, 2802265, 3827276, 4483624, 4723480, 4784095, 5604530, 7654552, 8967248, 9446960, 9568190, 11209060, 15309104, 19136380, 22418120, 38272760, 44836240, 76545520, 251643397, 503286794, 1006573588, 1258216985, 2013147176, 2516433970, 4026294352, 5032867940, 10065735880, 20131471760]

約数ペア:

[(1, 20131471760), (2, 10065735880), (4, 5032867940), (5, 4026294352), (8, 2516433970), (10, 2013147176), (16, 1258216985), (20, 1006573588), (40, 503286794), (80, 251643397), (263, 76545520), (449, 44836240), (526, 38272760), (898, 22418120), (1052, 19136380), (1315, 15309104), (1796, 11209060), (2104, 9568190), (2131, 9446960), (2245, 8967248), (2630, 7654552), (3592, 5604530), (4208, 4784095), (4262, 4723480), (4490, 4483624), (5260, 3827276), (7184, 2802265), (8524, 2361740), (8980, 2241812), (10520, 1913638), (10655, 1889392), (17048, 1180870), (17960, 1120906), (21040, 956819), (21310, 944696), (34096, 590435), (35920, 560453), (42620, 472348), (85240, 236174), (118087, 170480)]