81357240

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{2099}}^1$

素因数の和:2149

約数の個数: 128

約数和(自身を含む): 272160000

約数和(自身を除く): 190802760

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 17, 19, 20, 24, 30, 34, 38, 40, 51, 57, 60, 68, 76, 85, 95, 102, 114, 120, 136, 152, 170, 190, 204, 228, 255, 285, 323, 340, 380, 408, 456, 510, 570, 646, 680, 760, 969, 1020, 1140, 1292, 1615, 1938, 2040, 2099, 2280, 2584, 3230, 3876, 4198, 4845, 6297, 6460, 7752, 8396, 9690, 10495, 12594, 12920, 16792, 19380, 20990, 25188, 31485, 35683, 38760, 39881, 41980, 50376, 62970, 71366, 79762, 83960, 107049, 119643, 125940, 142732, 159524, 178415, 199405, 214098, 239286, 251880, 285464, 319048, 356830, 398810, 428196, 478572, 535245, 598215, 677977, 713660, 797620, 856392, 957144, 1070490, 1196430, 1355954, 1427320, 1595240, 2033931, 2140980, 2392860, 2711908, 3389885, 4067862, 4281960, 4785720, 5423816, 6779770, 8135724, 10169655, 13559540, 16271448, 20339310, 27119080, 40678620, 81357240]

約数ペア:

[(1, 81357240), (2, 40678620), (3, 27119080), (4, 20339310), (5, 16271448), (6, 13559540), (8, 10169655), (10, 8135724), (12, 6779770), (15, 5423816), (17, 4785720), (19, 4281960), (20, 4067862), (24, 3389885), (30, 2711908), (34, 2392860), (38, 2140980), (40, 2033931), (51, 1595240), (57, 1427320), (60, 1355954), (68, 1196430), (76, 1070490), (85, 957144), (95, 856392), (102, 797620), (114, 713660), (120, 677977), (136, 598215), (152, 535245), (170, 478572), (190, 428196), (204, 398810), (228, 356830), (255, 319048), (285, 285464), (323, 251880), (340, 239286), (380, 214098), (408, 199405), (456, 178415), (510, 159524), (570, 142732), (646, 125940), (680, 119643), (760, 107049), (969, 83960), (1020, 79762), (1140, 71366), (1292, 62970), (1615, 50376), (1938, 41980), (2040, 39881), (2099, 38760), (2280, 35683), (2584, 31485), (3230, 25188), (3876, 20990), (4198, 19380), (4845, 16792), (6297, 12920), (6460, 12594), (7752, 10495), (8396, 9690)]