18874375

素因数分解:

$5^4\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{101}}^1$

素因数の和:157

約数の個数: 40

約数和(自身を含む): 26766432

約数和(自身を除く): 7892057

約数列:

[1, 5, 13, 23, 25, 65, 101, 115, 125, 299, 325, 505, 575, 625, 1313, 1495, 1625, 2323, 2525, 2875, 6565, 7475, 8125, 11615, 12625, 14375, 30199, 32825, 37375, 58075, 63125, 150995, 164125, 186875, 290375, 754975, 820625, 1451875, 3774875, 18874375]

約数ペア:

[(1, 18874375), (5, 3774875), (13, 1451875), (23, 820625), (25, 754975), (65, 290375), (101, 186875), (115, 164125), (125, 150995), (299, 63125), (325, 58075), (505, 37375), (575, 32825), (625, 30199), (1313, 14375), (1495, 12625), (1625, 11615), (2323, 8125), (2525, 7475), (2875, 6565)]