643591980

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{23}}^2\times {\mathrm{751}}^1$

素因数の和:818

約数の個数: 180

約数和(自身を含む): 2113380192

約数和(自身を除く): 1469788212

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 23, 27, 30, 36, 45, 46, 54, 60, 69, 81, 90, 92, 108, 115, 135, 138, 162, 180, 207, 230, 270, 276, 324, 345, 405, 414, 460, 529, 540, 621, 690, 751, 810, 828, 1035, 1058, 1242, 1380, 1502, 1587, 1620, 1863, 2070, 2116, 2253, 2484, 2645, 3004, 3105, 3174, 3726, 3755, 4140, 4506, 4761, 5290, 6210, 6348, 6759, 7452, 7510, 7935, 9012, 9315, 9522, 10580, 11265, 12420, 13518, 14283, 15020, 15870, 17273, 18630, 19044, 20277, 22530, 23805, 27036, 28566, 31740, 33795, 34546, 37260, 40554, 42849, 45060, 47610, 51819, 57132, 60831, 67590, 69092, 71415, 81108, 85698, 86365, 95220, 101385, 103638, 121662, 135180, 142830, 155457, 171396, 172730, 202770, 207276, 214245, 243324, 259095, 285660, 304155, 310914, 345460, 397279, 405540, 428490, 466371, 518190, 608310, 621828, 777285, 794558, 856980, 932742, 1036380, 1191837, 1216620, 1399113, 1554570, 1589116, 1865484, 1986395, 2331855, 2383674, 2798226, 3109140, 3575511, 3972790, 4663710, 4767348, 5596452, 5959185, 6995565, 7151022, 7945580, 9327420, 10726533, 11918370, 13991130, 14302044, 17877555, 21453066, 23836740, 27982260, 32179599, 35755110, 42906132, 53632665, 64359198, 71510220, 107265330, 128718396, 160897995, 214530660, 321795990, 643591980]

約数ペア:

[(1, 643591980), (2, 321795990), (3, 214530660), (4, 160897995), (5, 128718396), (6, 107265330), (9, 71510220), (10, 64359198), (12, 53632665), (15, 42906132), (18, 35755110), (20, 32179599), (23, 27982260), (27, 23836740), (30, 21453066), (36, 17877555), (45, 14302044), (46, 13991130), (54, 11918370), (60, 10726533), (69, 9327420), (81, 7945580), (90, 7151022), (92, 6995565), (108, 5959185), (115, 5596452), (135, 4767348), (138, 4663710), (162, 3972790), (180, 3575511), (207, 3109140), (230, 2798226), (270, 2383674), (276, 2331855), (324, 1986395), (345, 1865484), (405, 1589116), (414, 1554570), (460, 1399113), (529, 1216620), (540, 1191837), (621, 1036380), (690, 932742), (751, 856980), (810, 794558), (828, 777285), (1035, 621828), (1058, 608310), (1242, 518190), (1380, 466371), (1502, 428490), (1587, 405540), (1620, 397279), (1863, 345460), (2070, 310914), (2116, 304155), (2253, 285660), (2484, 259095), (2645, 243324), (3004, 214245), (3105, 207276), (3174, 202770), (3726, 172730), (3755, 171396), (4140, 155457), (4506, 142830), (4761, 135180), (5290, 121662), (6210, 103638), (6348, 101385), (6759, 95220), (7452, 86365), (7510, 85698), (7935, 81108), (9012, 71415), (9315, 69092), (9522, 67590), (10580, 60831), (11265, 57132), (12420, 51819), (13518, 47610), (14283, 45060), (15020, 42849), (15870, 40554), (17273, 37260), (18630, 34546), (19044, 33795), (20277, 31740), (22530, 28566), (23805, 27036)]