20180719975

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{59879}}^1$

素因数の和:59980

約数の個数: 48

約数和(自身を含む): 29002518720

約数和(自身を除く): 8821798745

約数列:

[1, 5, 13, 17, 25, 61, 65, 85, 221, 305, 325, 425, 793, 1037, 1105, 1525, 3965, 5185, 5525, 13481, 19825, 25925, 59879, 67405, 299395, 337025, 778427, 1017943, 1496975, 3652619, 3892135, 5089715, 13233259, 18263095, 19460675, 25448575, 47484047, 62094523, 66166295, 91315475, 237420235, 310472615, 330831475, 807228799, 1187101175, 1552363075, 4036143995, 20180719975]

約数ペア:

[(1, 20180719975), (5, 4036143995), (13, 1552363075), (17, 1187101175), (25, 807228799), (61, 330831475), (65, 310472615), (85, 237420235), (221, 91315475), (305, 66166295), (325, 62094523), (425, 47484047), (793, 25448575), (1037, 19460675), (1105, 18263095), (1525, 13233259), (3965, 5089715), (5185, 3892135), (5525, 3652619), (13481, 1496975), (19825, 1017943), (25925, 778427), (59879, 337025), (67405, 299395)]