205416375

素因数分解:

$3^1\times 5^3\times {\mathrm{43}}^1\times {\mathrm{12739}}^1$

素因数の和:12800

約数の個数: 32

約数和(自身を含む): 349789440

約数和(自身を除く): 144373065

約数列:

[1, 3, 5, 15, 25, 43, 75, 125, 129, 215, 375, 645, 1075, 3225, 5375, 12739, 16125, 38217, 63695, 191085, 318475, 547777, 955425, 1592375, 1643331, 2738885, 4777125, 8216655, 13694425, 41083275, 68472125, 205416375]

約数ペア:

[(1, 205416375), (3, 68472125), (5, 41083275), (15, 13694425), (25, 8216655), (43, 4777125), (75, 2738885), (125, 1643331), (129, 1592375), (215, 955425), (375, 547777), (645, 318475), (1075, 191085), (3225, 63695), (5375, 38217), (12739, 16125)]