81998820

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{127}}^1\times {\mathrm{211}}^1$

素因数の和:370

約数の個数: 144

約数和(自身を含む): 266692608

約数和(自身を除く): 184693788

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 17, 18, 20, 30, 34, 36, 45, 51, 60, 68, 85, 90, 102, 127, 153, 170, 180, 204, 211, 254, 255, 306, 340, 381, 422, 508, 510, 612, 633, 635, 762, 765, 844, 1020, 1055, 1143, 1266, 1270, 1524, 1530, 1899, 1905, 2110, 2159, 2286, 2532, 2540, 3060, 3165, 3587, 3798, 3810, 4220, 4318, 4572, 5715, 6330, 6477, 7174, 7596, 7620, 8636, 9495, 10761, 10795, 11430, 12660, 12954, 14348, 17935, 18990, 19431, 21522, 21590, 22860, 25908, 26797, 32283, 32385, 35870, 37980, 38862, 43044, 43180, 53594, 53805, 64566, 64770, 71740, 77724, 80391, 97155, 107188, 107610, 129132, 129540, 133985, 160782, 161415, 194310, 215220, 241173, 267970, 321564, 322830, 388620, 401955, 455549, 482346, 535940, 645660, 803910, 911098, 964692, 1205865, 1366647, 1607820, 1822196, 2277745, 2411730, 2733294, 4099941, 4555490, 4823460, 5466588, 6833235, 8199882, 9110980, 13666470, 16399764, 20499705, 27332940, 40999410, 81998820]

約数ペア:

[(1, 81998820), (2, 40999410), (3, 27332940), (4, 20499705), (5, 16399764), (6, 13666470), (9, 9110980), (10, 8199882), (12, 6833235), (15, 5466588), (17, 4823460), (18, 4555490), (20, 4099941), (30, 2733294), (34, 2411730), (36, 2277745), (45, 1822196), (51, 1607820), (60, 1366647), (68, 1205865), (85, 964692), (90, 911098), (102, 803910), (127, 645660), (153, 535940), (170, 482346), (180, 455549), (204, 401955), (211, 388620), (254, 322830), (255, 321564), (306, 267970), (340, 241173), (381, 215220), (422, 194310), (508, 161415), (510, 160782), (612, 133985), (633, 129540), (635, 129132), (762, 107610), (765, 107188), (844, 97155), (1020, 80391), (1055, 77724), (1143, 71740), (1266, 64770), (1270, 64566), (1524, 53805), (1530, 53594), (1899, 43180), (1905, 43044), (2110, 38862), (2159, 37980), (2286, 35870), (2532, 32385), (2540, 32283), (3060, 26797), (3165, 25908), (3587, 22860), (3798, 21590), (3810, 21522), (4220, 19431), (4318, 18990), (4572, 17935), (5715, 14348), (6330, 12954), (6477, 12660), (7174, 11430), (7596, 10795), (7620, 10761), (8636, 9495)]