81316960

素因数分解:

$2^5\times 5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{1163}}^1$

素因数の和:1220

約数の個数: 96

約数和(自身を含む): 211196160

約数和(自身を除く): 129879200

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 23, 32, 38, 40, 46, 76, 80, 92, 95, 115, 152, 160, 184, 190, 230, 304, 368, 380, 437, 460, 608, 736, 760, 874, 920, 1163, 1520, 1748, 1840, 2185, 2326, 3040, 3496, 3680, 4370, 4652, 5815, 6992, 8740, 9304, 11630, 13984, 17480, 18608, 22097, 23260, 26749, 34960, 37216, 44194, 46520, 53498, 69920, 88388, 93040, 106996, 110485, 133745, 176776, 186080, 213992, 220970, 267490, 353552, 427984, 441940, 508231, 534980, 707104, 855968, 883880, 1016462, 1069960, 1767760, 2032924, 2139920, 2541155, 3535520, 4065848, 4279840, 5082310, 8131696, 10164620, 16263392, 20329240, 40658480, 81316960]

約数ペア:

[(1, 81316960), (2, 40658480), (4, 20329240), (5, 16263392), (8, 10164620), (10, 8131696), (16, 5082310), (19, 4279840), (20, 4065848), (23, 3535520), (32, 2541155), (38, 2139920), (40, 2032924), (46, 1767760), (76, 1069960), (80, 1016462), (92, 883880), (95, 855968), (115, 707104), (152, 534980), (160, 508231), (184, 441940), (190, 427984), (230, 353552), (304, 267490), (368, 220970), (380, 213992), (437, 186080), (460, 176776), (608, 133745), (736, 110485), (760, 106996), (874, 93040), (920, 88388), (1163, 69920), (1520, 53498), (1748, 46520), (1840, 44194), (2185, 37216), (2326, 34960), (3040, 26749), (3496, 23260), (3680, 22097), (4370, 18608), (4652, 17480), (5815, 13984), (6992, 11630), (8740, 9304)]