81366320

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{109}}^1$

素因数の和:203

約数の個数: 160

約数和(自身を含む): 230461440

約数和(自身を除く): 149095120

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 31, 35, 40, 43, 56, 62, 70, 80, 86, 109, 112, 124, 140, 155, 172, 215, 217, 218, 248, 280, 301, 310, 344, 430, 434, 436, 496, 545, 560, 602, 620, 688, 763, 860, 868, 872, 1085, 1090, 1204, 1240, 1333, 1505, 1526, 1720, 1736, 1744, 2170, 2180, 2408, 2480, 2666, 3010, 3052, 3379, 3440, 3472, 3815, 4340, 4360, 4687, 4816, 5332, 6020, 6104, 6665, 6758, 7630, 8680, 8720, 9331, 9374, 10664, 12040, 12208, 13330, 13516, 15260, 16895, 17360, 18662, 18748, 21328, 23435, 23653, 24080, 26660, 27032, 30520, 32809, 33790, 37324, 37496, 46655, 46870, 47306, 53320, 54064, 61040, 65618, 67580, 74648, 74992, 93310, 93740, 94612, 106640, 118265, 131236, 135160, 145297, 149296, 164045, 186620, 187480, 189224, 236530, 262472, 270320, 290594, 328090, 373240, 374960, 378448, 473060, 524944, 581188, 656180, 726485, 746480, 946120, 1017079, 1162376, 1312360, 1452970, 1892240, 2034158, 2324752, 2624720, 2905940, 4068316, 5085395, 5811880, 8136632, 10170790, 11623760, 16273264, 20341580, 40683160, 81366320]

約数ペア:

[(1, 81366320), (2, 40683160), (4, 20341580), (5, 16273264), (7, 11623760), (8, 10170790), (10, 8136632), (14, 5811880), (16, 5085395), (20, 4068316), (28, 2905940), (31, 2624720), (35, 2324752), (40, 2034158), (43, 1892240), (56, 1452970), (62, 1312360), (70, 1162376), (80, 1017079), (86, 946120), (109, 746480), (112, 726485), (124, 656180), (140, 581188), (155, 524944), (172, 473060), (215, 378448), (217, 374960), (218, 373240), (248, 328090), (280, 290594), (301, 270320), (310, 262472), (344, 236530), (430, 189224), (434, 187480), (436, 186620), (496, 164045), (545, 149296), (560, 145297), (602, 135160), (620, 131236), (688, 118265), (763, 106640), (860, 94612), (868, 93740), (872, 93310), (1085, 74992), (1090, 74648), (1204, 67580), (1240, 65618), (1333, 61040), (1505, 54064), (1526, 53320), (1720, 47306), (1736, 46870), (1744, 46655), (2170, 37496), (2180, 37324), (2408, 33790), (2480, 32809), (2666, 30520), (3010, 27032), (3052, 26660), (3379, 24080), (3440, 23653), (3472, 23435), (3815, 21328), (4340, 18748), (4360, 18662), (4687, 17360), (4816, 16895), (5332, 15260), (6020, 13516), (6104, 13330), (6665, 12208), (6758, 12040), (7630, 10664), (8680, 9374), (8720, 9331)]