20163210625

素因数分解:

$5^4\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{631}}^1$

素因数の和:764

約数の個数: 80

約数和(自身を含む): 27364740480

約数和(自身を除く): 7201529855

約数列:

[1, 5, 25, 29, 41, 43, 125, 145, 205, 215, 625, 631, 725, 1025, 1075, 1189, 1247, 1763, 3155, 3625, 5125, 5375, 5945, 6235, 8815, 15775, 18125, 18299, 25625, 25871, 26875, 27133, 29725, 31175, 44075, 51127, 78875, 91495, 129355, 135665, 148625, 155875, 220375, 255635, 394375, 457475, 646775, 678325, 743125, 750259, 779375, 786857, 1101875, 1112453, 1278175, 2287375, 3233875, 3391625, 3751295, 3934285, 5562265, 6390875, 11436875, 16169375, 16958125, 18756475, 19671425, 27811325, 31954375, 32261137, 93782375, 98357125, 139056625, 161305685, 468911875, 491785625, 695283125, 806528425, 4032642125, 20163210625]

約数ペア:

[(1, 20163210625), (5, 4032642125), (25, 806528425), (29, 695283125), (41, 491785625), (43, 468911875), (125, 161305685), (145, 139056625), (205, 98357125), (215, 93782375), (625, 32261137), (631, 31954375), (725, 27811325), (1025, 19671425), (1075, 18756475), (1189, 16958125), (1247, 16169375), (1763, 11436875), (3155, 6390875), (3625, 5562265), (5125, 3934285), (5375, 3751295), (5945, 3391625), (6235, 3233875), (8815, 2287375), (15775, 1278175), (18125, 1112453), (18299, 1101875), (25625, 786857), (25871, 779375), (26875, 750259), (27133, 743125), (29725, 678325), (31175, 646775), (44075, 457475), (51127, 394375), (78875, 255635), (91495, 220375), (129355, 155875), (135665, 148625)]