65319280

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{181}}^1\times {\mathrm{347}}^1$

素因数の和:554

約数の個数: 80

約数和(自身を含む): 164926944

約数和(自身を除く): 99607664

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 181, 208, 260, 347, 362, 520, 694, 724, 905, 1040, 1388, 1448, 1735, 1810, 2353, 2776, 2896, 3470, 3620, 4511, 4706, 5552, 6940, 7240, 9022, 9412, 11765, 13880, 14480, 18044, 18824, 22555, 23530, 27760, 36088, 37648, 45110, 47060, 62807, 72176, 90220, 94120, 125614, 180440, 188240, 251228, 314035, 360880, 502456, 628070, 816491, 1004912, 1256140, 1632982, 2512280, 3265964, 4082455, 5024560, 6531928, 8164910, 13063856, 16329820, 32659640, 65319280]

約数ペア:

[(1, 65319280), (2, 32659640), (4, 16329820), (5, 13063856), (8, 8164910), (10, 6531928), (13, 5024560), (16, 4082455), (20, 3265964), (26, 2512280), (40, 1632982), (52, 1256140), (65, 1004912), (80, 816491), (104, 628070), (130, 502456), (181, 360880), (208, 314035), (260, 251228), (347, 188240), (362, 180440), (520, 125614), (694, 94120), (724, 90220), (905, 72176), (1040, 62807), (1388, 47060), (1448, 45110), (1735, 37648), (1810, 36088), (2353, 27760), (2776, 23530), (2896, 22555), (3470, 18824), (3620, 18044), (4511, 14480), (4706, 13880), (5552, 11765), (6940, 9412), (7240, 9022)]