30721915

素因数分解:

$5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{79}}^1\times {\mathrm{271}}^1$

素因数の和:403

約数の個数: 32

約数和(自身を含む): 43868160

約数和(自身を除く): 13146245

約数列:

[1, 5, 7, 35, 41, 79, 205, 271, 287, 395, 553, 1355, 1435, 1897, 2765, 3239, 9485, 11111, 16195, 21409, 22673, 55555, 77777, 107045, 113365, 149863, 388885, 749315, 877769, 4388845, 6144383, 30721915]

約数ペア:

[(1, 30721915), (5, 6144383), (7, 4388845), (35, 877769), (41, 749315), (79, 388885), (205, 149863), (271, 113365), (287, 107045), (395, 77777), (553, 55555), (1355, 22673), (1435, 21409), (1897, 16195), (2765, 11111), (3239, 9485)]