20294090

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{103}}^1$

素因数の和:207

約数の個数: 64

約数和(自身を含む): 41783040

約数和(自身を除く): 21488950

約数列:

[1, 2, 5, 10, 17, 19, 34, 38, 61, 85, 95, 103, 122, 170, 190, 206, 305, 323, 515, 610, 646, 1030, 1037, 1159, 1615, 1751, 1957, 2074, 2318, 3230, 3502, 3914, 5185, 5795, 6283, 8755, 9785, 10370, 11590, 12566, 17510, 19570, 19703, 31415, 33269, 39406, 62830, 66538, 98515, 106811, 119377, 166345, 197030, 213622, 238754, 332690, 534055, 596885, 1068110, 1193770, 2029409, 4058818, 10147045, 20294090]

約数ペア:

[(1, 20294090), (2, 10147045), (5, 4058818), (10, 2029409), (17, 1193770), (19, 1068110), (34, 596885), (38, 534055), (61, 332690), (85, 238754), (95, 213622), (103, 197030), (122, 166345), (170, 119377), (190, 106811), (206, 98515), (305, 66538), (323, 62830), (515, 39406), (610, 33269), (646, 31415), (1030, 19703), (1037, 19570), (1159, 17510), (1615, 12566), (1751, 11590), (1957, 10370), (2074, 9785), (2318, 8755), (3230, 6283), (3502, 5795), (3914, 5185)]