40040

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1$

素因数の和:42

約数の個数: 64

約数和(自身を含む): 120960

約数和(自身を除く): 80920

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 13, 14, 20, 22, 26, 28, 35, 40, 44, 52, 55, 56, 65, 70, 77, 88, 91, 104, 110, 130, 140, 143, 154, 182, 220, 260, 280, 286, 308, 364, 385, 440, 455, 520, 572, 616, 715, 728, 770, 910, 1001, 1144, 1430, 1540, 1820, 2002, 2860, 3080, 3640, 4004, 5005, 5720, 8008, 10010, 20020, 40040]

約数ペア:

[(1, 40040), (2, 20020), (4, 10010), (5, 8008), (7, 5720), (8, 5005), (10, 4004), (11, 3640), (13, 3080), (14, 2860), (20, 2002), (22, 1820), (26, 1540), (28, 1430), (35, 1144), (40, 1001), (44, 910), (52, 770), (55, 728), (56, 715), (65, 616), (70, 572), (77, 520), (88, 455), (91, 440), (104, 385), (110, 364), (130, 308), (140, 286), (143, 280), (154, 260), (182, 220)]