131396860

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{13219}}^1$

素因数の和:13306

約数の個数: 48

約数和(自身を含む): 319818240

約数和(自身を除く): 188421380

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, 9940, 13219, 26438, 52876, 66095, 92533, 132190, 185066, 264380, 370132, 462665, 925330, 938549, 1850660, 1877098, 3754196, 4692745, 6569843, 9385490, 13139686, 18770980, 26279372, 32849215, 65698430, 131396860]

約数ペア:

[(1, 131396860), (2, 65698430), (4, 32849215), (5, 26279372), (7, 18770980), (10, 13139686), (14, 9385490), (20, 6569843), (28, 4692745), (35, 3754196), (70, 1877098), (71, 1850660), (140, 938549), (142, 925330), (284, 462665), (355, 370132), (497, 264380), (710, 185066), (994, 132190), (1420, 92533), (1988, 66095), (2485, 52876), (4970, 26438), (9940, 13219)]