221070920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{25469}}^1$

素因数の和:25518

約数の個数: 64

約数和(自身を含む): 586828800

約数和(自身を除く): 365757880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 31, 35, 40, 56, 62, 70, 124, 140, 155, 217, 248, 280, 310, 434, 620, 868, 1085, 1240, 1736, 2170, 4340, 8680, 25469, 50938, 101876, 127345, 178283, 203752, 254690, 356566, 509380, 713132, 789539, 891415, 1018760, 1426264, 1579078, 1782830, 3158156, 3565660, 3947695, 5526773, 6316312, 7131320, 7895390, 11053546, 15790780, 22107092, 27633865, 31581560, 44214184, 55267730, 110535460, 221070920]

約数ペア:

[(1, 221070920), (2, 110535460), (4, 55267730), (5, 44214184), (7, 31581560), (8, 27633865), (10, 22107092), (14, 15790780), (20, 11053546), (28, 7895390), (31, 7131320), (35, 6316312), (40, 5526773), (56, 3947695), (62, 3565660), (70, 3158156), (124, 1782830), (140, 1579078), (155, 1426264), (217, 1018760), (248, 891415), (280, 789539), (310, 713132), (434, 509380), (620, 356566), (868, 254690), (1085, 203752), (1240, 178283), (1736, 127345), (2170, 101876), (4340, 50938), (8680, 25469)]