21104750

素因数分解:

$2^1\times 5^3\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{71}}^1$

素因数の和:158

約数の個数: 64

約数和(自身を含む): 42456960

約数和(自身を除く): 21352210

約数列:

[1, 2, 5, 10, 25, 29, 41, 50, 58, 71, 82, 125, 142, 145, 205, 250, 290, 355, 410, 710, 725, 1025, 1189, 1450, 1775, 2050, 2059, 2378, 2911, 3550, 3625, 4118, 5125, 5822, 5945, 7250, 8875, 10250, 10295, 11890, 14555, 17750, 20590, 29110, 29725, 51475, 59450, 72775, 84419, 102950, 145550, 148625, 168838, 257375, 297250, 363875, 422095, 514750, 727750, 844190, 2110475, 4220950, 10552375, 21104750]

約数ペア:

[(1, 21104750), (2, 10552375), (5, 4220950), (10, 2110475), (25, 844190), (29, 727750), (41, 514750), (50, 422095), (58, 363875), (71, 297250), (82, 257375), (125, 168838), (142, 148625), (145, 145550), (205, 102950), (250, 84419), (290, 72775), (355, 59450), (410, 51475), (710, 29725), (725, 29110), (1025, 20590), (1189, 17750), (1450, 14555), (1775, 11890), (2050, 10295), (2059, 10250), (2378, 8875), (2911, 7250), (3550, 5945), (3625, 5822), (4118, 5125)]