81998475

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{2273}}^1$

素因数の和:2336

約数の個数: 48

約数和(自身を含む): 150011232

約数和(自身を除く): 68012757

約数列:

[1, 3, 5, 13, 15, 25, 37, 39, 65, 75, 111, 185, 195, 325, 481, 555, 925, 975, 1443, 2273, 2405, 2775, 6819, 7215, 11365, 12025, 29549, 34095, 36075, 56825, 84101, 88647, 147745, 170475, 252303, 420505, 443235, 738725, 1093313, 1261515, 2102525, 2216175, 3279939, 5466565, 6307575, 16399695, 27332825, 81998475]

約数ペア:

[(1, 81998475), (3, 27332825), (5, 16399695), (13, 6307575), (15, 5466565), (25, 3279939), (37, 2216175), (39, 2102525), (65, 1261515), (75, 1093313), (111, 738725), (185, 443235), (195, 420505), (325, 252303), (481, 170475), (555, 147745), (925, 88647), (975, 84101), (1443, 56825), (2273, 36075), (2405, 34095), (2775, 29549), (6819, 12025), (7215, 11365)]