81948425

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{577}}^1$

素因数の和:642

約数の個数: 48

約数和(自身を含む): 120408960

約数和(自身を除く): 38460535

約数列:

[1, 5, 13, 19, 23, 25, 65, 95, 115, 247, 299, 325, 437, 475, 575, 577, 1235, 1495, 2185, 2885, 5681, 6175, 7475, 7501, 10925, 10963, 13271, 14425, 28405, 37505, 54815, 66355, 142025, 142519, 172523, 187525, 252149, 274075, 331775, 712595, 862615, 1260745, 3277937, 3562975, 4313075, 6303725, 16389685, 81948425]

約数ペア:

[(1, 81948425), (5, 16389685), (13, 6303725), (19, 4313075), (23, 3562975), (25, 3277937), (65, 1260745), (95, 862615), (115, 712595), (247, 331775), (299, 274075), (325, 252149), (437, 187525), (475, 172523), (575, 142519), (577, 142025), (1235, 66355), (1495, 54815), (2185, 37505), (2885, 28405), (5681, 14425), (6175, 13271), (7475, 10963), (7501, 10925)]