1990995

素因数分解:

$3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{199}}^1$

素因数の和:259

約数の個数: 32

約数和(自身を含む): 3456000

約数和(自身を除く): 1465005

約数列:

[1, 3, 5, 15, 23, 29, 69, 87, 115, 145, 199, 345, 435, 597, 667, 995, 2001, 2985, 3335, 4577, 5771, 10005, 13731, 17313, 22885, 28855, 68655, 86565, 132733, 398199, 663665, 1990995]

約数ペア:

[(1, 1990995), (3, 663665), (5, 398199), (15, 132733), (23, 86565), (29, 68655), (69, 28855), (87, 22885), (115, 17313), (145, 13731), (199, 10005), (345, 5771), (435, 4577), (597, 3335), (667, 2985), (995, 2001)]