19638825

素因数分解:

$3^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{73}}^1\times {\mathrm{211}}^1$

素因数の和:314

約数の個数: 48

約数和(自身を含む): 35015616

約数和(自身を除く): 15376791

約数列:

[1, 3, 5, 15, 17, 25, 51, 73, 75, 85, 211, 219, 255, 365, 425, 633, 1055, 1095, 1241, 1275, 1825, 3165, 3587, 3723, 5275, 5475, 6205, 10761, 15403, 15825, 17935, 18615, 31025, 46209, 53805, 77015, 89675, 93075, 231045, 261851, 269025, 385075, 785553, 1155225, 1309255, 3927765, 6546275, 19638825]

約数ペア:

[(1, 19638825), (3, 6546275), (5, 3927765), (15, 1309255), (17, 1155225), (25, 785553), (51, 385075), (73, 269025), (75, 261851), (85, 231045), (211, 93075), (219, 89675), (255, 77015), (365, 53805), (425, 46209), (633, 31025), (1055, 18615), (1095, 17935), (1241, 15825), (1275, 15403), (1825, 10761), (3165, 6205), (3587, 5475), (3723, 5275)]