21841820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{1091}}^1$

素因数の和:1131

約数の個数: 96

約数和(自身を含む): 61641216

約数和(自身を除く): 39799396

約数列:

[1, 2, 4, 5, 7, 10, 11, 13, 14, 20, 22, 26, 28, 35, 44, 52, 55, 65, 70, 77, 91, 110, 130, 140, 143, 154, 182, 220, 260, 286, 308, 364, 385, 455, 572, 715, 770, 910, 1001, 1091, 1430, 1540, 1820, 2002, 2182, 2860, 4004, 4364, 5005, 5455, 7637, 10010, 10910, 12001, 14183, 15274, 20020, 21820, 24002, 28366, 30548, 38185, 48004, 56732, 60005, 70915, 76370, 84007, 99281, 120010, 141830, 152740, 156013, 168014, 198562, 240020, 283660, 312026, 336028, 397124, 420035, 496405, 624052, 780065, 840070, 992810, 1092091, 1560130, 1680140, 1985620, 2184182, 3120260, 4368364, 5460455, 10920910, 21841820]

約数ペア:

[(1, 21841820), (2, 10920910), (4, 5460455), (5, 4368364), (7, 3120260), (10, 2184182), (11, 1985620), (13, 1680140), (14, 1560130), (20, 1092091), (22, 992810), (26, 840070), (28, 780065), (35, 624052), (44, 496405), (52, 420035), (55, 397124), (65, 336028), (70, 312026), (77, 283660), (91, 240020), (110, 198562), (130, 168014), (140, 156013), (143, 152740), (154, 141830), (182, 120010), (220, 99281), (260, 84007), (286, 76370), (308, 70915), (364, 60005), (385, 56732), (455, 48004), (572, 38185), (715, 30548), (770, 28366), (910, 24002), (1001, 21820), (1091, 20020), (1430, 15274), (1540, 14183), (1820, 12001), (2002, 10910), (2182, 10010), (2860, 7637), (4004, 5455), (4364, 5005)]