212891725

素因数分解:

$5^2\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{71}}^1\times {\mathrm{73}}^1$

素因数の和:238

約数の個数: 48

約数和(自身を含む): 285410304

約数和(自身を除く): 72518579

約数列:

[1, 5, 25, 31, 53, 71, 73, 155, 265, 355, 365, 775, 1325, 1643, 1775, 1825, 2201, 2263, 3763, 3869, 5183, 8215, 11005, 11315, 18815, 19345, 25915, 41075, 55025, 56575, 94075, 96725, 116653, 119939, 129575, 160673, 274699, 583265, 599695, 803365, 1373495, 2916325, 2998475, 4016825, 6867475, 8515669, 42578345, 212891725]

約数ペア:

[(1, 212891725), (5, 42578345), (25, 8515669), (31, 6867475), (53, 4016825), (71, 2998475), (73, 2916325), (155, 1373495), (265, 803365), (355, 599695), (365, 583265), (775, 274699), (1325, 160673), (1643, 129575), (1775, 119939), (1825, 116653), (2201, 96725), (2263, 94075), (3763, 56575), (3869, 55025), (5183, 41075), (8215, 25915), (11005, 19345), (11315, 18815)]