28209012

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{211}}^1\times {\mathrm{857}}^1$

素因数の和:1088

約数の個数: 48

約数和(自身を含む): 71303232

約数和(自身を除く): 43094220

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 156, 211, 422, 633, 844, 857, 1266, 1714, 2532, 2571, 2743, 3428, 5142, 5486, 8229, 10284, 10972, 11141, 16458, 22282, 32916, 33423, 44564, 66846, 133692, 180827, 361654, 542481, 723308, 1084962, 2169924, 2350751, 4701502, 7052253, 9403004, 14104506, 28209012]

約数ペア:

[(1, 28209012), (2, 14104506), (3, 9403004), (4, 7052253), (6, 4701502), (12, 2350751), (13, 2169924), (26, 1084962), (39, 723308), (52, 542481), (78, 361654), (156, 180827), (211, 133692), (422, 66846), (633, 44564), (844, 33423), (857, 32916), (1266, 22282), (1714, 16458), (2532, 11141), (2571, 10972), (2743, 10284), (3428, 8229), (5142, 5486)]