21741890

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{2791}}^1$

素因数の和:2858

約数の個数: 32

約数和(自身を含む): 42215040

約数和(自身を除く): 20473150

約数列:

[1, 2, 5, 10, 19, 38, 41, 82, 95, 190, 205, 410, 779, 1558, 2791, 3895, 5582, 7790, 13955, 27910, 53029, 106058, 114431, 228862, 265145, 530290, 572155, 1144310, 2174189, 4348378, 10870945, 21741890]

約数ペア:

[(1, 21741890), (2, 10870945), (5, 4348378), (10, 2174189), (19, 1144310), (38, 572155), (41, 530290), (82, 265145), (95, 228862), (190, 114431), (205, 106058), (410, 53029), (779, 27910), (1558, 13955), (2791, 7790), (3895, 5582)]