20877075

素因数分解:

$3^3\times 5^2\times {\mathrm{157}}^1\times {\mathrm{197}}^1$

素因数の和:373

約数の個数: 48

約数和(自身を含む): 38792160

約数和(自身を除く): 17915085

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 135, 157, 197, 225, 471, 591, 675, 785, 985, 1413, 1773, 2355, 2955, 3925, 4239, 4925, 5319, 7065, 8865, 11775, 14775, 21195, 26595, 30929, 35325, 44325, 92787, 105975, 132975, 154645, 278361, 463935, 773225, 835083, 1391805, 2319675, 4175415, 6959025, 20877075]

約数ペア:

[(1, 20877075), (3, 6959025), (5, 4175415), (9, 2319675), (15, 1391805), (25, 835083), (27, 773225), (45, 463935), (75, 278361), (135, 154645), (157, 132975), (197, 105975), (225, 92787), (471, 44325), (591, 35325), (675, 30929), (785, 26595), (985, 21195), (1413, 14775), (1773, 11775), (2355, 8865), (2955, 7065), (3925, 5319), (4239, 4925)]