81445895

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{101}}^1\times {\mathrm{179}}^1$

素因数の和:355

約数の個数: 32

約数和(自身を含む): 107075520

約数和(自身を除く): 25629625

約数列:

[1, 5, 17, 53, 85, 101, 179, 265, 505, 895, 901, 1717, 3043, 4505, 5353, 8585, 9487, 15215, 18079, 26765, 47435, 90395, 91001, 161279, 307343, 455005, 806395, 958187, 1536715, 4790935, 16289179, 81445895]

約数ペア:

[(1, 81445895), (5, 16289179), (17, 4790935), (53, 1536715), (85, 958187), (101, 806395), (179, 455005), (265, 307343), (505, 161279), (895, 91001), (901, 90395), (1717, 47435), (3043, 26765), (4505, 18079), (5353, 15215), (8585, 9487)]