20392965

素因数分解:

$3^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{1171}}^1$

素因数の和:1231

約数の個数: 40

約数和(自身を含む): 37438368

約数和(自身を除く): 17045403

約数列:

[1, 3, 5, 9, 15, 27, 43, 45, 81, 129, 135, 215, 387, 405, 645, 1161, 1171, 1935, 3483, 3513, 5805, 5855, 10539, 17415, 17565, 31617, 50353, 52695, 94851, 151059, 158085, 251765, 453177, 474255, 755295, 1359531, 2265885, 4078593, 6797655, 20392965]

約数ペア:

[(1, 20392965), (3, 6797655), (5, 4078593), (9, 2265885), (15, 1359531), (27, 755295), (43, 474255), (45, 453177), (81, 251765), (129, 158085), (135, 151059), (215, 94851), (387, 52695), (405, 50353), (645, 31617), (1161, 17565), (1171, 17415), (1935, 10539), (3483, 5855), (3513, 5805)]