20177884540

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{1160983}}^1$

素因数の和:1161082

約数の個数: 48

約数和(自身を含む): 46810874880

約数和(自身を除く): 26632990340

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 79, 110, 158, 220, 316, 395, 790, 869, 1580, 1738, 3476, 4345, 8690, 17380, 1160983, 2321966, 4643932, 5804915, 11609830, 12770813, 23219660, 25541626, 51083252, 63854065, 91717657, 127708130, 183435314, 255416260, 366870628, 458588285, 917176570, 1008894227, 1834353140, 2017788454, 4035576908, 5044471135, 10088942270, 20177884540]

約数ペア:

[(1, 20177884540), (2, 10088942270), (4, 5044471135), (5, 4035576908), (10, 2017788454), (11, 1834353140), (20, 1008894227), (22, 917176570), (44, 458588285), (55, 366870628), (79, 255416260), (110, 183435314), (158, 127708130), (220, 91717657), (316, 63854065), (395, 51083252), (790, 25541626), (869, 23219660), (1580, 12770813), (1738, 11609830), (3476, 5804915), (4345, 4643932), (8690, 2321966), (17380, 1160983)]