21572109

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{1499}}^1$

素因数の和:1562

約数の個数: 32

約数和(自身を含む): 35280000

約数和(自身を除く): 13707891

約数列:

[1, 3, 9, 13, 27, 39, 41, 117, 123, 351, 369, 533, 1107, 1499, 1599, 4497, 4797, 13491, 14391, 19487, 40473, 58461, 61459, 175383, 184377, 526149, 553131, 798967, 1659393, 2396901, 7190703, 21572109]

約数ペア:

[(1, 21572109), (3, 7190703), (9, 2396901), (13, 1659393), (27, 798967), (39, 553131), (41, 526149), (117, 184377), (123, 175383), (351, 61459), (369, 58461), (533, 40473), (1107, 19487), (1499, 14391), (1599, 13491), (4497, 4797)]