427979825

素因数分解:

$5^2\times 7^1\times {\mathrm{13}}^2\times {\mathrm{29}}^1\times {\mathrm{499}}^1$

素因数の和:571

約数の個数: 72

約数和(自身を含む): 680760000

約数和(自身を除く): 252780175

約数列:

[1, 5, 7, 13, 25, 29, 35, 65, 91, 145, 169, 175, 203, 325, 377, 455, 499, 725, 845, 1015, 1183, 1885, 2275, 2495, 2639, 3493, 4225, 4901, 5075, 5915, 6487, 9425, 12475, 13195, 14471, 17465, 24505, 29575, 32435, 34307, 45409, 65975, 72355, 84331, 87325, 101297, 122525, 162175, 171535, 188123, 227045, 361775, 421655, 506485, 590317, 857675, 940615, 1135225, 1316861, 2108275, 2445599, 2532425, 2951585, 4703075, 6584305, 12227995, 14757925, 17119193, 32921525, 61139975, 85595965, 427979825]

約数ペア:

[(1, 427979825), (5, 85595965), (7, 61139975), (13, 32921525), (25, 17119193), (29, 14757925), (35, 12227995), (65, 6584305), (91, 4703075), (145, 2951585), (169, 2532425), (175, 2445599), (203, 2108275), (325, 1316861), (377, 1135225), (455, 940615), (499, 857675), (725, 590317), (845, 506485), (1015, 421655), (1183, 361775), (1885, 227045), (2275, 188123), (2495, 171535), (2639, 162175), (3493, 122525), (4225, 101297), (4901, 87325), (5075, 84331), (5915, 72355), (6487, 65975), (9425, 45409), (12475, 34307), (13195, 32435), (14471, 29575), (17465, 24505)]