19420625

素因数分解:

$5^4\times 7^1\times {\mathrm{23}}^1\times {\mathrm{193}}^1$

素因数の和:243

約数の個数: 40

約数和(自身を含む): 29090688

約数和(自身を除く): 9670063

約数列:

[1, 5, 7, 23, 25, 35, 115, 125, 161, 175, 193, 575, 625, 805, 875, 965, 1351, 2875, 4025, 4375, 4439, 4825, 6755, 14375, 20125, 22195, 24125, 31073, 33775, 100625, 110975, 120625, 155365, 168875, 554875, 776825, 844375, 2774375, 3884125, 19420625]

約数ペア:

[(1, 19420625), (5, 3884125), (7, 2774375), (23, 844375), (25, 776825), (35, 554875), (115, 168875), (125, 155365), (161, 120625), (175, 110975), (193, 100625), (575, 33775), (625, 31073), (805, 24125), (875, 22195), (965, 20125), (1351, 14375), (2875, 6755), (4025, 4825), (4375, 4439)]