20963890

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{127}}^1\times {\mathrm{971}}^1$

素因数の和:1122

約数の個数: 32

約数和(自身を含む): 40310784

約数和(自身を除く): 19346894

約数列:

[1, 2, 5, 10, 17, 34, 85, 127, 170, 254, 635, 971, 1270, 1942, 2159, 4318, 4855, 9710, 10795, 16507, 21590, 33014, 82535, 123317, 165070, 246634, 616585, 1233170, 2096389, 4192778, 10481945, 20963890]

約数ペア:

[(1, 20963890), (2, 10481945), (5, 4192778), (10, 2096389), (17, 1233170), (34, 616585), (85, 246634), (127, 165070), (170, 123317), (254, 82535), (635, 33014), (971, 21590), (1270, 16507), (1942, 10795), (2159, 9710), (4318, 4855)]