278310975

素因数分解:

$3^1\times 5^2\times {\mathrm{61}}^1\times {\mathrm{127}}^1\times {\mathrm{479}}^1$

素因数の和:680

約数の個数: 48

約数和(自身を含む): 472350720

約数和(自身を除く): 194039745

約数列:

[1, 3, 5, 15, 25, 61, 75, 127, 183, 305, 381, 479, 635, 915, 1437, 1525, 1905, 2395, 3175, 4575, 7185, 7747, 9525, 11975, 23241, 29219, 35925, 38735, 60833, 87657, 116205, 146095, 182499, 193675, 304165, 438285, 581025, 730475, 912495, 1520825, 2191425, 3710813, 4562475, 11132439, 18554065, 55662195, 92770325, 278310975]

約数ペア:

[(1, 278310975), (3, 92770325), (5, 55662195), (15, 18554065), (25, 11132439), (61, 4562475), (75, 3710813), (127, 2191425), (183, 1520825), (305, 912495), (381, 730475), (479, 581025), (635, 438285), (915, 304165), (1437, 193675), (1525, 182499), (1905, 146095), (2395, 116205), (3175, 87657), (4575, 60833), (7185, 38735), (7747, 35925), (9525, 29219), (11975, 23241)]