20553660

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{1283}}^1$

素因数の和:1387

約数の個数: 72

約数和(自身を含む): 63095760

約数和(自身を除く): 42542100

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 89, 90, 178, 180, 267, 356, 445, 534, 801, 890, 1068, 1283, 1335, 1602, 1780, 2566, 2670, 3204, 3849, 4005, 5132, 5340, 6415, 7698, 8010, 11547, 12830, 15396, 16020, 19245, 23094, 25660, 38490, 46188, 57735, 76980, 114187, 115470, 228374, 230940, 342561, 456748, 570935, 685122, 1027683, 1141870, 1370244, 1712805, 2055366, 2283740, 3425610, 4110732, 5138415, 6851220, 10276830, 20553660]

約数ペア:

[(1, 20553660), (2, 10276830), (3, 6851220), (4, 5138415), (5, 4110732), (6, 3425610), (9, 2283740), (10, 2055366), (12, 1712805), (15, 1370244), (18, 1141870), (20, 1027683), (30, 685122), (36, 570935), (45, 456748), (60, 342561), (89, 230940), (90, 228374), (178, 115470), (180, 114187), (267, 76980), (356, 57735), (445, 46188), (534, 38490), (801, 25660), (890, 23094), (1068, 19245), (1283, 16020), (1335, 15396), (1602, 12830), (1780, 11547), (2566, 8010), (2670, 7698), (3204, 6415), (3849, 5340), (4005, 5132)]