21928075

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{619}}^1$

素因数の和:751

約数の個数: 24

約数和(自身を含む): 29598800

約数和(自身を除く): 7670725

約数列:

[1, 5, 13, 25, 65, 109, 325, 545, 619, 1417, 2725, 3095, 7085, 8047, 15475, 35425, 40235, 67471, 201175, 337355, 877123, 1686775, 4385615, 21928075]

約数ペア:

[(1, 21928075), (5, 4385615), (13, 1686775), (25, 877123), (65, 337355), (109, 201175), (325, 67471), (545, 40235), (619, 35425), (1417, 15475), (2725, 8047), (3095, 7085)]