20290860

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{349}}^1$

素因数の和:400

約数の個数: 144

約数和(自身を含む): 68796000

約数和(自身を除く): 48505140

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 17, 18, 19, 20, 30, 34, 36, 38, 45, 51, 57, 60, 68, 76, 85, 90, 95, 102, 114, 153, 170, 171, 180, 190, 204, 228, 255, 285, 306, 323, 340, 342, 349, 380, 510, 570, 612, 646, 684, 698, 765, 855, 969, 1020, 1047, 1140, 1292, 1396, 1530, 1615, 1710, 1745, 1938, 2094, 2907, 3060, 3141, 3230, 3420, 3490, 3876, 4188, 4845, 5235, 5814, 5933, 6282, 6460, 6631, 6980, 9690, 10470, 11628, 11866, 12564, 13262, 14535, 15705, 17799, 19380, 19893, 20940, 23732, 26524, 29070, 29665, 31410, 33155, 35598, 39786, 53397, 58140, 59330, 59679, 62820, 66310, 71196, 79572, 88995, 99465, 106794, 112727, 118660, 119358, 132620, 177990, 198930, 213588, 225454, 238716, 266985, 298395, 338181, 355980, 397860, 450908, 533970, 563635, 596790, 676362, 1014543, 1067940, 1127270, 1193580, 1352724, 1690905, 2029086, 2254540, 3381810, 4058172, 5072715, 6763620, 10145430, 20290860]

約数ペア:

[(1, 20290860), (2, 10145430), (3, 6763620), (4, 5072715), (5, 4058172), (6, 3381810), (9, 2254540), (10, 2029086), (12, 1690905), (15, 1352724), (17, 1193580), (18, 1127270), (19, 1067940), (20, 1014543), (30, 676362), (34, 596790), (36, 563635), (38, 533970), (45, 450908), (51, 397860), (57, 355980), (60, 338181), (68, 298395), (76, 266985), (85, 238716), (90, 225454), (95, 213588), (102, 198930), (114, 177990), (153, 132620), (170, 119358), (171, 118660), (180, 112727), (190, 106794), (204, 99465), (228, 88995), (255, 79572), (285, 71196), (306, 66310), (323, 62820), (340, 59679), (342, 59330), (349, 58140), (380, 53397), (510, 39786), (570, 35598), (612, 33155), (646, 31410), (684, 29665), (698, 29070), (765, 26524), (855, 23732), (969, 20940), (1020, 19893), (1047, 19380), (1140, 17799), (1292, 15705), (1396, 14535), (1530, 13262), (1615, 12564), (1710, 11866), (1745, 11628), (1938, 10470), (2094, 9690), (2907, 6980), (3060, 6631), (3141, 6460), (3230, 6282), (3420, 5933), (3490, 5814), (3876, 5235), (4188, 4845)]