40143880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{311}}^1\times {\mathrm{461}}^1$

素因数の和:790

約数の個数: 64

約数和(自身を含む): 103783680

約数和(自身を除く): 63639800

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 311, 461, 622, 922, 1244, 1555, 1844, 2177, 2305, 2488, 3110, 3227, 3688, 4354, 4610, 6220, 6454, 8708, 9220, 10885, 12440, 12908, 16135, 17416, 18440, 21770, 25816, 32270, 43540, 64540, 87080, 129080, 143371, 286742, 573484, 716855, 1003597, 1146968, 1433710, 2007194, 2867420, 4014388, 5017985, 5734840, 8028776, 10035970, 20071940, 40143880]

約数ペア:

[(1, 40143880), (2, 20071940), (4, 10035970), (5, 8028776), (7, 5734840), (8, 5017985), (10, 4014388), (14, 2867420), (20, 2007194), (28, 1433710), (35, 1146968), (40, 1003597), (56, 716855), (70, 573484), (140, 286742), (280, 143371), (311, 129080), (461, 87080), (622, 64540), (922, 43540), (1244, 32270), (1555, 25816), (1844, 21770), (2177, 18440), (2305, 17416), (2488, 16135), (3110, 12908), (3227, 12440), (3688, 10885), (4354, 9220), (4610, 8708), (6220, 6454)]