20218389429

素因数分解:

$3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{103}}^1\times {\mathrm{181}}^1\times {\mathrm{1201}}^1$

素因数の和:1538

約数の個数: 64

約数和(自身を含む): 32034050048

約数和(自身を除く): 11815660619

約数列:

[1, 3, 7, 21, 43, 103, 129, 181, 301, 309, 543, 721, 903, 1201, 1267, 2163, 3603, 3801, 4429, 7783, 8407, 13287, 18643, 23349, 25221, 31003, 51643, 54481, 55929, 93009, 123703, 130501, 154929, 163443, 217381, 361501, 371109, 391503, 652143, 801649, 865921, 1084503, 1521667, 2404947, 2597763, 4565001, 5319229, 5611543, 9347383, 15957687, 16834629, 22390243, 28042149, 37234603, 65431681, 67170729, 111703809, 156731701, 196295043, 470195103, 962780449, 2888341347, 6739463143, 20218389429]

約数ペア:

[(1, 20218389429), (3, 6739463143), (7, 2888341347), (21, 962780449), (43, 470195103), (103, 196295043), (129, 156731701), (181, 111703809), (301, 67170729), (309, 65431681), (543, 37234603), (721, 28042149), (903, 22390243), (1201, 16834629), (1267, 15957687), (2163, 9347383), (3603, 5611543), (3801, 5319229), (4429, 4565001), (7783, 2597763), (8407, 2404947), (13287, 1521667), (18643, 1084503), (23349, 865921), (25221, 801649), (31003, 652143), (51643, 391503), (54481, 371109), (55929, 361501), (93009, 217381), (123703, 163443), (130501, 154929)]