21906778

素因数分解:

$2^1\times {\mathrm{17}}^2\times {\mathrm{151}}^1\times {\mathrm{251}}^1$

素因数の和:438

約数の個数: 24

約数和(自身を含む): 35277984

約数和(自身を除く): 13371206

約数列:

[1, 2, 17, 34, 151, 251, 289, 302, 502, 578, 2567, 4267, 5134, 8534, 37901, 43639, 72539, 75802, 87278, 145078, 644317, 1288634, 10953389, 21906778]

約数ペア:

[(1, 21906778), (2, 10953389), (17, 1288634), (34, 644317), (151, 145078), (251, 87278), (289, 75802), (302, 72539), (502, 43639), (578, 37901), (2567, 8534), (4267, 5134)]