20222540

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{193}}^1$

素因数の和:259

約数の個数: 72

約数和(自身を含む): 47714688

約数和(自身を除く): 27492148

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 31, 52, 62, 65, 124, 130, 155, 169, 193, 260, 310, 338, 386, 403, 620, 676, 772, 806, 845, 965, 1612, 1690, 1930, 2015, 2509, 3380, 3860, 4030, 5018, 5239, 5983, 8060, 10036, 10478, 11966, 12545, 20956, 23932, 25090, 26195, 29915, 32617, 50180, 52390, 59830, 65234, 77779, 104780, 119660, 130468, 155558, 163085, 311116, 326170, 388895, 652340, 777790, 1011127, 1555580, 2022254, 4044508, 5055635, 10111270, 20222540]

約数ペア:

[(1, 20222540), (2, 10111270), (4, 5055635), (5, 4044508), (10, 2022254), (13, 1555580), (20, 1011127), (26, 777790), (31, 652340), (52, 388895), (62, 326170), (65, 311116), (124, 163085), (130, 155558), (155, 130468), (169, 119660), (193, 104780), (260, 77779), (310, 65234), (338, 59830), (386, 52390), (403, 50180), (620, 32617), (676, 29915), (772, 26195), (806, 25090), (845, 23932), (965, 20956), (1612, 12545), (1690, 11966), (1930, 10478), (2015, 10036), (2509, 8060), (3380, 5983), (3860, 5239), (4030, 5018)]