21005595

素因数分解:

$3^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{11969}}^1$

素因数の和:11996

約数の個数: 32

約数和(自身を含む): 40219200

約数和(自身を除く): 19213605

約数列:

[1, 3, 5, 9, 13, 15, 27, 39, 45, 65, 117, 135, 195, 351, 585, 1755, 11969, 35907, 59845, 107721, 155597, 179535, 323163, 466791, 538605, 777985, 1400373, 1615815, 2333955, 4201119, 7001865, 21005595]

約数ペア:

[(1, 21005595), (3, 7001865), (5, 4201119), (9, 2333955), (13, 1615815), (15, 1400373), (27, 777985), (39, 538605), (45, 466791), (65, 323163), (117, 179535), (135, 155597), (195, 107721), (351, 59845), (585, 35907), (1755, 11969)]