20129520125

素因数分解:

$5^3\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{26189}}^1$

素因数の和:26271

約数の個数: 64

約数和(自身を含む): 30201050880

約数和(自身を除く): 10071530755

約数列:

[1, 5, 11, 13, 25, 43, 55, 65, 125, 143, 215, 275, 325, 473, 559, 715, 1075, 1375, 1625, 2365, 2795, 3575, 5375, 6149, 11825, 13975, 17875, 26189, 30745, 59125, 69875, 130945, 153725, 288079, 340457, 654725, 768625, 1126127, 1440395, 1702285, 3273625, 3745027, 5630635, 7201975, 8511425, 12387397, 14639651, 18725135, 28153175, 36009875, 42557125, 61936985, 73198255, 93625675, 140765875, 161036161, 309684925, 365991275, 468128375, 805180805, 1548424625, 1829956375, 4025904025, 20129520125]

約数ペア:

[(1, 20129520125), (5, 4025904025), (11, 1829956375), (13, 1548424625), (25, 805180805), (43, 468128375), (55, 365991275), (65, 309684925), (125, 161036161), (143, 140765875), (215, 93625675), (275, 73198255), (325, 61936985), (473, 42557125), (559, 36009875), (715, 28153175), (1075, 18725135), (1375, 14639651), (1625, 12387397), (2365, 8511425), (2795, 7201975), (3575, 5630635), (5375, 3745027), (6149, 3273625), (11825, 1702285), (13975, 1440395), (17875, 1126127), (26189, 768625), (30745, 654725), (59125, 340457), (69875, 288079), (130945, 153725)]