21000819831

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{317}}^1\times {\mathrm{41903}}^1$

素因数の和:42271

約数の個数: 32

約数和(自身を含む): 30701887488

約数和(自身を除く): 9701067657

約数列:

[1, 3, 17, 31, 51, 93, 317, 527, 951, 1581, 5389, 9827, 16167, 29481, 41903, 125709, 167059, 501177, 712351, 1298993, 2137053, 3896979, 13283251, 22082881, 39849753, 66248643, 225815267, 411780781, 677445801, 1235342343, 7000273277, 21000819831]

約数ペア:

[(1, 21000819831), (3, 7000273277), (17, 1235342343), (31, 677445801), (51, 411780781), (93, 225815267), (317, 66248643), (527, 39849753), (951, 22082881), (1581, 13283251), (5389, 3896979), (9827, 2137053), (16167, 1298993), (29481, 712351), (41903, 501177), (125709, 167059)]