21028956

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{163}}^1\times {\mathrm{827}}^1$

素因数の和:1010

約数の個数: 48

約数和(自身を含む): 53230464

約数和(自身を除く): 32201508

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 156, 163, 326, 489, 652, 827, 978, 1654, 1956, 2119, 2481, 3308, 4238, 4962, 6357, 8476, 9924, 10751, 12714, 21502, 25428, 32253, 43004, 64506, 129012, 134801, 269602, 404403, 539204, 808806, 1617612, 1752413, 3504826, 5257239, 7009652, 10514478, 21028956]

約数ペア:

[(1, 21028956), (2, 10514478), (3, 7009652), (4, 5257239), (6, 3504826), (12, 1752413), (13, 1617612), (26, 808806), (39, 539204), (52, 404403), (78, 269602), (156, 134801), (163, 129012), (326, 64506), (489, 43004), (652, 32253), (827, 25428), (978, 21502), (1654, 12714), (1956, 10751), (2119, 9924), (2481, 8476), (3308, 6357), (4238, 4962)]