71940040

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{73}}^1\times {\mathrm{347}}^1$

素因数の和:502

約数の個数: 64

約数和(自身を含む): 166872960

約数和(自身を除く): 94932920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 73, 142, 146, 284, 292, 347, 355, 365, 568, 584, 694, 710, 730, 1388, 1420, 1460, 1735, 2776, 2840, 2920, 3470, 5183, 6940, 10366, 13880, 20732, 24637, 25331, 25915, 41464, 49274, 50662, 51830, 98548, 101324, 103660, 123185, 126655, 197096, 202648, 207320, 246370, 253310, 492740, 506620, 985480, 1013240, 1798501, 3597002, 7194004, 8992505, 14388008, 17985010, 35970020, 71940040]

約数ペア:

[(1, 71940040), (2, 35970020), (4, 17985010), (5, 14388008), (8, 8992505), (10, 7194004), (20, 3597002), (40, 1798501), (71, 1013240), (73, 985480), (142, 506620), (146, 492740), (284, 253310), (292, 246370), (347, 207320), (355, 202648), (365, 197096), (568, 126655), (584, 123185), (694, 103660), (710, 101324), (730, 98548), (1388, 51830), (1420, 50662), (1460, 49274), (1735, 41464), (2776, 25915), (2840, 25331), (2920, 24637), (3470, 20732), (5183, 13880), (6940, 10366)]