20118475

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{601}}^1$

素因数の和:727

約数の個数: 24

約数和(自身を含む): 27171872

約数和(自身を除く): 7053397

約数列:

[1, 5, 13, 25, 65, 103, 325, 515, 601, 1339, 2575, 3005, 6695, 7813, 15025, 33475, 39065, 61903, 195325, 309515, 804739, 1547575, 4023695, 20118475]

約数ペア:

[(1, 20118475), (5, 4023695), (13, 1547575), (25, 804739), (65, 309515), (103, 195325), (325, 61903), (515, 39065), (601, 33475), (1339, 15025), (2575, 7813), (3005, 6695)]