78339980

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{1283}}^1$

素因数の和:1406

約数の個数: 48

約数和(自身を含む): 170843904

約数和(自身を除く): 92503924

約数列:

[1, 2, 4, 5, 10, 20, 43, 71, 86, 142, 172, 215, 284, 355, 430, 710, 860, 1283, 1420, 2566, 3053, 5132, 6106, 6415, 12212, 12830, 15265, 25660, 30530, 55169, 61060, 91093, 110338, 182186, 220676, 275845, 364372, 455465, 551690, 910930, 1103380, 1821860, 3916999, 7833998, 15667996, 19584995, 39169990, 78339980]

約数ペア:

[(1, 78339980), (2, 39169990), (4, 19584995), (5, 15667996), (10, 7833998), (20, 3916999), (43, 1821860), (71, 1103380), (86, 910930), (142, 551690), (172, 455465), (215, 364372), (284, 275845), (355, 220676), (430, 182186), (710, 110338), (860, 91093), (1283, 61060), (1420, 55169), (2566, 30530), (3053, 25660), (5132, 15265), (6106, 12830), (6415, 12212)]