28378485

素因数分解:

$3^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{6781}}^1$

素因数の和:6826

約数の個数: 32

約数和(自身を含む): 52085760

約数和(自身を除く): 23707275

約数列:

[1, 3, 5, 9, 15, 27, 31, 45, 93, 135, 155, 279, 465, 837, 1395, 4185, 6781, 20343, 33905, 61029, 101715, 183087, 210211, 305145, 630633, 915435, 1051055, 1891899, 3153165, 5675697, 9459495, 28378485]

約数ペア:

[(1, 28378485), (3, 9459495), (5, 5675697), (9, 3153165), (15, 1891899), (27, 1051055), (31, 915435), (45, 630633), (93, 305145), (135, 210211), (155, 183087), (279, 101715), (465, 61029), (837, 33905), (1395, 20343), (4185, 6781)]