20444805

素因数分解:

$3^6\times 5^1\times {\mathrm{71}}^1\times {\mathrm{79}}^1$

素因数の和:173

約数の個数: 56

約数和(自身を含む): 37774080

約数和(自身を除く): 17329275

約数列:

[1, 3, 5, 9, 15, 27, 45, 71, 79, 81, 135, 213, 237, 243, 355, 395, 405, 639, 711, 729, 1065, 1185, 1215, 1917, 2133, 3195, 3555, 3645, 5609, 5751, 6399, 9585, 10665, 16827, 17253, 19197, 28045, 28755, 31995, 50481, 51759, 57591, 84135, 86265, 95985, 151443, 252405, 258795, 287955, 454329, 757215, 1362987, 2271645, 4088961, 6814935, 20444805]

約数ペア:

[(1, 20444805), (3, 6814935), (5, 4088961), (9, 2271645), (15, 1362987), (27, 757215), (45, 454329), (71, 287955), (79, 258795), (81, 252405), (135, 151443), (213, 95985), (237, 86265), (243, 84135), (355, 57591), (395, 51759), (405, 50481), (639, 31995), (711, 28755), (729, 28045), (1065, 19197), (1185, 17253), (1215, 16827), (1917, 10665), (2133, 9585), (3195, 6399), (3555, 5751), (3645, 5609)]