20703688

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{79}}^1$

素因数の和:190

約数の個数: 64

約数和(自身を含む): 43545600

約数和(自身を除く): 22841912

約数列:

[1, 2, 4, 8, 17, 34, 41, 47, 68, 79, 82, 94, 136, 158, 164, 188, 316, 328, 376, 632, 697, 799, 1343, 1394, 1598, 1927, 2686, 2788, 3196, 3239, 3713, 3854, 5372, 5576, 6392, 6478, 7426, 7708, 10744, 12956, 14852, 15416, 25912, 29704, 32759, 55063, 63121, 65518, 110126, 126242, 131036, 152233, 220252, 252484, 262072, 304466, 440504, 504968, 608932, 1217864, 2587961, 5175922, 10351844, 20703688]

約数ペア:

[(1, 20703688), (2, 10351844), (4, 5175922), (8, 2587961), (17, 1217864), (34, 608932), (41, 504968), (47, 440504), (68, 304466), (79, 262072), (82, 252484), (94, 220252), (136, 152233), (158, 131036), (164, 126242), (188, 110126), (316, 65518), (328, 63121), (376, 55063), (632, 32759), (697, 29704), (799, 25912), (1343, 15416), (1394, 14852), (1598, 12956), (1927, 10744), (2686, 7708), (2788, 7426), (3196, 6478), (3239, 6392), (3713, 5576), (3854, 5372)]