81432970

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{149}}^1$

素因数の和:271

約数の個数: 64

約数和(自身を含む): 159667200

約数和(自身を除く): 78234230

約数列:

[1, 2, 5, 10, 31, 41, 43, 62, 82, 86, 149, 155, 205, 215, 298, 310, 410, 430, 745, 1271, 1333, 1490, 1763, 2542, 2666, 3526, 4619, 6109, 6355, 6407, 6665, 8815, 9238, 12218, 12710, 12814, 13330, 17630, 23095, 30545, 32035, 46190, 54653, 61090, 64070, 109306, 189379, 198617, 262687, 273265, 378758, 397234, 525374, 546530, 946895, 993085, 1313435, 1893790, 1986170, 2626870, 8143297, 16286594, 40716485, 81432970]

約数ペア:

[(1, 81432970), (2, 40716485), (5, 16286594), (10, 8143297), (31, 2626870), (41, 1986170), (43, 1893790), (62, 1313435), (82, 993085), (86, 946895), (149, 546530), (155, 525374), (205, 397234), (215, 378758), (298, 273265), (310, 262687), (410, 198617), (430, 189379), (745, 109306), (1271, 64070), (1333, 61090), (1490, 54653), (1763, 46190), (2542, 32035), (2666, 30545), (3526, 23095), (4619, 17630), (6109, 13330), (6355, 12814), (6407, 12710), (6665, 12218), (8815, 9238)]