20177247760

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{431}}^1\times {\mathrm{439}}^1$

素因数の和:957

約数の個数: 160

約数和(自身を含む): 49779671040

約数和(自身を除く): 29602423280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 43, 62, 80, 86, 124, 155, 172, 215, 248, 310, 344, 430, 431, 439, 496, 620, 688, 860, 862, 878, 1240, 1333, 1720, 1724, 1756, 2155, 2195, 2480, 2666, 3440, 3448, 3512, 4310, 4390, 5332, 6665, 6896, 7024, 8620, 8780, 10664, 13330, 13361, 13609, 17240, 17560, 18533, 18877, 21328, 26660, 26722, 27218, 34480, 35120, 37066, 37754, 53320, 53444, 54436, 66805, 68045, 74132, 75508, 92665, 94385, 106640, 106888, 108872, 133610, 136090, 148264, 151016, 185330, 188770, 189209, 213776, 217744, 267220, 272180, 296528, 302032, 370660, 377540, 378418, 534440, 544360, 574523, 585187, 741320, 755080, 756836, 946045, 1068880, 1088720, 1149046, 1170374, 1482640, 1510160, 1513672, 1892090, 2298092, 2340748, 2872615, 2925935, 3027344, 3784180, 4596184, 4681496, 5745230, 5851870, 5865479, 7568360, 8135987, 9192368, 9362992, 11490460, 11703740, 11730958, 15136720, 16271974, 22980920, 23407480, 23461916, 29327395, 32543948, 40679935, 45961840, 46814960, 46923832, 58654790, 65087896, 81359870, 93847664, 117309580, 130175792, 162719740, 234619160, 252215597, 325439480, 469238320, 504431194, 650878960, 1008862388, 1261077985, 2017724776, 2522155970, 4035449552, 5044311940, 10088623880, 20177247760]

約数ペア:

[(1, 20177247760), (2, 10088623880), (4, 5044311940), (5, 4035449552), (8, 2522155970), (10, 2017724776), (16, 1261077985), (20, 1008862388), (31, 650878960), (40, 504431194), (43, 469238320), (62, 325439480), (80, 252215597), (86, 234619160), (124, 162719740), (155, 130175792), (172, 117309580), (215, 93847664), (248, 81359870), (310, 65087896), (344, 58654790), (430, 46923832), (431, 46814960), (439, 45961840), (496, 40679935), (620, 32543948), (688, 29327395), (860, 23461916), (862, 23407480), (878, 22980920), (1240, 16271974), (1333, 15136720), (1720, 11730958), (1724, 11703740), (1756, 11490460), (2155, 9362992), (2195, 9192368), (2480, 8135987), (2666, 7568360), (3440, 5865479), (3448, 5851870), (3512, 5745230), (4310, 4681496), (4390, 4596184), (5332, 3784180), (6665, 3027344), (6896, 2925935), (7024, 2872615), (8620, 2340748), (8780, 2298092), (10664, 1892090), (13330, 1513672), (13361, 1510160), (13609, 1482640), (17240, 1170374), (17560, 1149046), (18533, 1088720), (18877, 1068880), (21328, 946045), (26660, 756836), (26722, 755080), (27218, 741320), (34480, 585187), (35120, 574523), (37066, 544360), (37754, 534440), (53320, 378418), (53444, 377540), (54436, 370660), (66805, 302032), (68045, 296528), (74132, 272180), (75508, 267220), (92665, 217744), (94385, 213776), (106640, 189209), (106888, 188770), (108872, 185330), (133610, 151016), (136090, 148264)]