1990809788

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{347}}^1\times {\mathrm{1291}}^1$

素因数の和:1754

約数の個数: 48

約数和(自身を含む): 3852309888

約数和(自身を除く): 1861500100

約数列:

[1, 2, 4, 11, 22, 44, 101, 202, 347, 404, 694, 1111, 1291, 1388, 2222, 2582, 3817, 4444, 5164, 7634, 14201, 15268, 28402, 35047, 56804, 70094, 130391, 140188, 260782, 385517, 447977, 521564, 771034, 895954, 1434301, 1542068, 1791908, 2868602, 4927747, 5737204, 9855494, 19710988, 45245677, 90491354, 180982708, 497702447, 995404894, 1990809788]

約数ペア:

[(1, 1990809788), (2, 995404894), (4, 497702447), (11, 180982708), (22, 90491354), (44, 45245677), (101, 19710988), (202, 9855494), (347, 5737204), (404, 4927747), (694, 2868602), (1111, 1791908), (1291, 1542068), (1388, 1434301), (2222, 895954), (2582, 771034), (3817, 521564), (4444, 447977), (5164, 385517), (7634, 260782), (14201, 140188), (15268, 130391), (28402, 70094), (35047, 56804)]