20199784840

素因数分解:

$2^3\times 5^1\times {\mathrm{179}}^1\times {\mathrm{1061}}^1\times {\mathrm{2659}}^1$

素因数の和:3910

約数の個数: 64

約数和(自身を含む): 45763704000

約数和(自身を除く): 25563919160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 179, 358, 716, 895, 1061, 1432, 1790, 2122, 2659, 3580, 4244, 5305, 5318, 7160, 8488, 10610, 10636, 13295, 21220, 21272, 26590, 42440, 53180, 106360, 189919, 379838, 475961, 759676, 949595, 951922, 1519352, 1899190, 1903844, 2379805, 2821199, 3798380, 3807688, 4759610, 5642398, 7596760, 9519220, 11284796, 14105995, 19038440, 22569592, 28211990, 56423980, 112847960, 504994621, 1009989242, 2019978484, 2524973105, 4039956968, 5049946210, 10099892420, 20199784840]

約数ペア:

[(1, 20199784840), (2, 10099892420), (4, 5049946210), (5, 4039956968), (8, 2524973105), (10, 2019978484), (20, 1009989242), (40, 504994621), (179, 112847960), (358, 56423980), (716, 28211990), (895, 22569592), (1061, 19038440), (1432, 14105995), (1790, 11284796), (2122, 9519220), (2659, 7596760), (3580, 5642398), (4244, 4759610), (5305, 3807688), (5318, 3798380), (7160, 2821199), (8488, 2379805), (10610, 1903844), (10636, 1899190), (13295, 1519352), (21220, 951922), (21272, 949595), (26590, 759676), (42440, 475961), (53180, 379838), (106360, 189919)]