20393775

素因数分解:

$3^7\times 5^2\times {\mathrm{373}}^1$

素因数の和:404

約数の個数: 48

約数和(自身を含む): 38028320

約数和(自身を除く): 17634545

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 81, 135, 225, 243, 373, 405, 675, 729, 1119, 1215, 1865, 2025, 2187, 3357, 3645, 5595, 6075, 9325, 10071, 10935, 16785, 18225, 27975, 30213, 50355, 54675, 83925, 90639, 151065, 251775, 271917, 453195, 755325, 815751, 1359585, 2265975, 4078755, 6797925, 20393775]

約数ペア:

[(1, 20393775), (3, 6797925), (5, 4078755), (9, 2265975), (15, 1359585), (25, 815751), (27, 755325), (45, 453195), (75, 271917), (81, 251775), (135, 151065), (225, 90639), (243, 83925), (373, 54675), (405, 50355), (675, 30213), (729, 27975), (1119, 18225), (1215, 16785), (1865, 10935), (2025, 10071), (2187, 9325), (3357, 6075), (3645, 5595)]