19948040

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{191}}^1\times {\mathrm{373}}^1$

素因数の和:582

約数の個数: 64

約数和(自身を含む): 51701760

約数和(自身を除く): 31753720

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 191, 280, 373, 382, 746, 764, 955, 1337, 1492, 1528, 1865, 1910, 2611, 2674, 2984, 3730, 3820, 5222, 5348, 6685, 7460, 7640, 10444, 10696, 13055, 13370, 14920, 20888, 26110, 26740, 52220, 53480, 71243, 104440, 142486, 284972, 356215, 498701, 569944, 712430, 997402, 1424860, 1994804, 2493505, 2849720, 3989608, 4987010, 9974020, 19948040]

約数ペア:

[(1, 19948040), (2, 9974020), (4, 4987010), (5, 3989608), (7, 2849720), (8, 2493505), (10, 1994804), (14, 1424860), (20, 997402), (28, 712430), (35, 569944), (40, 498701), (56, 356215), (70, 284972), (140, 142486), (191, 104440), (280, 71243), (373, 53480), (382, 52220), (746, 26740), (764, 26110), (955, 20888), (1337, 14920), (1492, 13370), (1528, 13055), (1865, 10696), (1910, 10444), (2611, 7640), (2674, 7460), (2984, 6685), (3730, 5348), (3820, 5222)]