20745340

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{709}}^1$

素因数の和:755

約数の個数: 96

約数和(自身を含む): 57254400

約数和(自身を除く): 36509060

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 19, 20, 22, 28, 35, 38, 44, 55, 70, 76, 77, 95, 110, 133, 140, 154, 190, 209, 220, 266, 308, 380, 385, 418, 532, 665, 709, 770, 836, 1045, 1330, 1418, 1463, 1540, 2090, 2660, 2836, 2926, 3545, 4180, 4963, 5852, 7090, 7315, 7799, 9926, 13471, 14180, 14630, 15598, 19852, 24815, 26942, 29260, 31196, 38995, 49630, 53884, 54593, 67355, 77990, 94297, 99260, 109186, 134710, 148181, 155980, 188594, 218372, 269420, 272965, 296362, 377188, 471485, 545930, 592724, 740905, 942970, 1037267, 1091860, 1481810, 1885940, 2074534, 2963620, 4149068, 5186335, 10372670, 20745340]

約数ペア:

[(1, 20745340), (2, 10372670), (4, 5186335), (5, 4149068), (7, 2963620), (10, 2074534), (11, 1885940), (14, 1481810), (19, 1091860), (20, 1037267), (22, 942970), (28, 740905), (35, 592724), (38, 545930), (44, 471485), (55, 377188), (70, 296362), (76, 272965), (77, 269420), (95, 218372), (110, 188594), (133, 155980), (140, 148181), (154, 134710), (190, 109186), (209, 99260), (220, 94297), (266, 77990), (308, 67355), (380, 54593), (385, 53884), (418, 49630), (532, 38995), (665, 31196), (709, 29260), (770, 26942), (836, 24815), (1045, 19852), (1330, 15598), (1418, 14630), (1463, 14180), (1540, 13471), (2090, 9926), (2660, 7799), (2836, 7315), (2926, 7090), (3545, 5852), (4180, 4963)]