20582140

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{373}}^1$

素因数の和:502

約数の個数: 48

約数和(自身を含む): 45239040

約数和(自身を除く): 24656900

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 89, 124, 155, 178, 310, 356, 373, 445, 620, 746, 890, 1492, 1780, 1865, 2759, 3730, 5518, 7460, 11036, 11563, 13795, 23126, 27590, 33197, 46252, 55180, 57815, 66394, 115630, 132788, 165985, 231260, 331970, 663940, 1029107, 2058214, 4116428, 5145535, 10291070, 20582140]

約数ペア:

[(1, 20582140), (2, 10291070), (4, 5145535), (5, 4116428), (10, 2058214), (20, 1029107), (31, 663940), (62, 331970), (89, 231260), (124, 165985), (155, 132788), (178, 115630), (310, 66394), (356, 57815), (373, 55180), (445, 46252), (620, 33197), (746, 27590), (890, 23126), (1492, 13795), (1780, 11563), (1865, 11036), (2759, 7460), (3730, 5518)]