78286840

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{239}}^1\times {\mathrm{431}}^1$

素因数の和:700

約数の個数: 64

約数和(自身を含む): 186624000

約数和(自身を除く): 108337160

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 239, 380, 431, 478, 760, 862, 956, 1195, 1724, 1912, 2155, 2390, 3448, 4310, 4541, 4780, 8189, 8620, 9082, 9560, 16378, 17240, 18164, 22705, 32756, 36328, 40945, 45410, 65512, 81890, 90820, 103009, 163780, 181640, 206018, 327560, 412036, 515045, 824072, 1030090, 1957171, 2060180, 3914342, 4120360, 7828684, 9785855, 15657368, 19571710, 39143420, 78286840]

約数ペア:

[(1, 78286840), (2, 39143420), (4, 19571710), (5, 15657368), (8, 9785855), (10, 7828684), (19, 4120360), (20, 3914342), (38, 2060180), (40, 1957171), (76, 1030090), (95, 824072), (152, 515045), (190, 412036), (239, 327560), (380, 206018), (431, 181640), (478, 163780), (760, 103009), (862, 90820), (956, 81890), (1195, 65512), (1724, 45410), (1912, 40945), (2155, 36328), (2390, 32756), (3448, 22705), (4310, 18164), (4541, 17240), (4780, 16378), (8189, 9560), (8620, 9082)]