28651720

素因数分解:

$2^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{9067}}^1$

素因数の和:9157

約数の個数: 32

約数和(自身を含む): 65289600

約数和(自身を除く): 36637880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 79, 158, 316, 395, 632, 790, 1580, 3160, 9067, 18134, 36268, 45335, 72536, 90670, 181340, 362680, 716293, 1432586, 2865172, 3581465, 5730344, 7162930, 14325860, 28651720]

約数ペア:

[(1, 28651720), (2, 14325860), (4, 7162930), (5, 5730344), (8, 3581465), (10, 2865172), (20, 1432586), (40, 716293), (79, 362680), (158, 181340), (316, 90670), (395, 72536), (632, 45335), (790, 36268), (1580, 18134), (3160, 9067)]