78854020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{7933}}^1$

素因数の和:8020

約数の個数: 48

約数和(自身を含む): 191939328

約数和(自身を除く): 113085308

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 71, 140, 142, 284, 355, 497, 710, 994, 1420, 1988, 2485, 4970, 7933, 9940, 15866, 31732, 39665, 55531, 79330, 111062, 158660, 222124, 277655, 555310, 563243, 1110620, 1126486, 2252972, 2816215, 3942701, 5632430, 7885402, 11264860, 15770804, 19713505, 39427010, 78854020]

約数ペア:

[(1, 78854020), (2, 39427010), (4, 19713505), (5, 15770804), (7, 11264860), (10, 7885402), (14, 5632430), (20, 3942701), (28, 2816215), (35, 2252972), (70, 1126486), (71, 1110620), (140, 563243), (142, 555310), (284, 277655), (355, 222124), (497, 158660), (710, 111062), (994, 79330), (1420, 55531), (1988, 39665), (2485, 31732), (4970, 15866), (7933, 9940)]