206880940

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{379}}^1\times {\mathrm{557}}^1$

素因数の和:959

約数の個数: 72

約数和(自身を含む): 507623760

約数和(自身を除く): 300742820

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 379, 490, 557, 758, 980, 1114, 1516, 1895, 2228, 2653, 2785, 3790, 3899, 5306, 5570, 7580, 7798, 10612, 11140, 13265, 15596, 18571, 19495, 26530, 27293, 37142, 38990, 53060, 54586, 74284, 77980, 92855, 109172, 136465, 185710, 211103, 272930, 371420, 422206, 545860, 844412, 1055515, 1477721, 2111030, 2955442, 4222060, 5910884, 7388605, 10344047, 14777210, 20688094, 29554420, 41376188, 51720235, 103440470, 206880940]

約数ペア:

[(1, 206880940), (2, 103440470), (4, 51720235), (5, 41376188), (7, 29554420), (10, 20688094), (14, 14777210), (20, 10344047), (28, 7388605), (35, 5910884), (49, 4222060), (70, 2955442), (98, 2111030), (140, 1477721), (196, 1055515), (245, 844412), (379, 545860), (490, 422206), (557, 371420), (758, 272930), (980, 211103), (1114, 185710), (1516, 136465), (1895, 109172), (2228, 92855), (2653, 77980), (2785, 74284), (3790, 54586), (3899, 53060), (5306, 38990), (5570, 37142), (7580, 27293), (7798, 26530), (10612, 19495), (11140, 18571), (13265, 15596)]