18875325

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{157}}^1\times {\mathrm{229}}^1$

素因数の和:406

約数の個数: 48

約数和(自身を含む): 36049280

約数和(自身を除く): 17173955

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 75, 105, 157, 175, 229, 471, 525, 687, 785, 1099, 1145, 1603, 2355, 3297, 3435, 3925, 4809, 5495, 5725, 8015, 11775, 16485, 17175, 24045, 27475, 35953, 40075, 82425, 107859, 120225, 179765, 251671, 539295, 755013, 898825, 1258355, 2696475, 3775065, 6291775, 18875325]

約数ペア:

[(1, 18875325), (3, 6291775), (5, 3775065), (7, 2696475), (15, 1258355), (21, 898825), (25, 755013), (35, 539295), (75, 251671), (105, 179765), (157, 120225), (175, 107859), (229, 82425), (471, 40075), (525, 35953), (687, 27475), (785, 24045), (1099, 17175), (1145, 16485), (1603, 11775), (2355, 8015), (3297, 5725), (3435, 5495), (3925, 4809)]