20545785

素因数分解:

$3^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{509}}^1$

素因数の和:559

約数の個数: 64

約数和(自身を含む): 41126400

約数和(自身を除く): 20580615

約数列:

[1, 3, 5, 9, 13, 15, 23, 27, 39, 45, 65, 69, 115, 117, 135, 195, 207, 299, 345, 351, 509, 585, 621, 897, 1035, 1495, 1527, 1755, 2545, 2691, 3105, 4485, 4581, 6617, 7635, 8073, 11707, 13455, 13743, 19851, 22905, 33085, 35121, 40365, 58535, 59553, 68715, 99255, 105363, 152191, 175605, 178659, 297765, 316089, 456573, 526815, 760955, 893295, 1369719, 1580445, 2282865, 4109157, 6848595, 20545785]

約数ペア:

[(1, 20545785), (3, 6848595), (5, 4109157), (9, 2282865), (13, 1580445), (15, 1369719), (23, 893295), (27, 760955), (39, 526815), (45, 456573), (65, 316089), (69, 297765), (115, 178659), (117, 175605), (135, 152191), (195, 105363), (207, 99255), (299, 68715), (345, 59553), (351, 58535), (509, 40365), (585, 35121), (621, 33085), (897, 22905), (1035, 19851), (1495, 13743), (1527, 13455), (1755, 11707), (2545, 8073), (2691, 7635), (3105, 6617), (4485, 4581)]