78855440

素因数分解:

$2^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{13883}}^1$

素因数の和:13967

約数の個数: 40

約数和(自身を含む): 185934528

約数和(自身を除く): 107079088

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 71, 80, 142, 284, 355, 568, 710, 1136, 1420, 2840, 5680, 13883, 27766, 55532, 69415, 111064, 138830, 222128, 277660, 555320, 985693, 1110640, 1971386, 3942772, 4928465, 7885544, 9856930, 15771088, 19713860, 39427720, 78855440]

約数ペア:

[(1, 78855440), (2, 39427720), (4, 19713860), (5, 15771088), (8, 9856930), (10, 7885544), (16, 4928465), (20, 3942772), (40, 1971386), (71, 1110640), (80, 985693), (142, 555320), (284, 277660), (355, 222128), (568, 138830), (710, 111064), (1136, 69415), (1420, 55532), (2840, 27766), (5680, 13883)]