21780264

素因数分解:

$2^3\times 3^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{211}}^1$

素因数の和:271

約数の個数: 128

約数和(自身を含む): 65940480

約数和(自身を除く): 44160216

約数列:

[1, 2, 3, 4, 6, 8, 11, 12, 17, 22, 23, 24, 33, 34, 44, 46, 51, 66, 68, 69, 88, 92, 102, 132, 136, 138, 184, 187, 204, 211, 253, 264, 276, 374, 391, 408, 422, 506, 552, 561, 633, 748, 759, 782, 844, 1012, 1122, 1173, 1266, 1496, 1518, 1564, 1688, 2024, 2244, 2321, 2346, 2532, 3036, 3128, 3587, 4301, 4488, 4642, 4692, 4853, 5064, 6072, 6963, 7174, 8602, 9284, 9384, 9706, 10761, 12903, 13926, 14348, 14559, 17204, 18568, 19412, 21522, 25806, 27852, 28696, 29118, 34408, 38824, 39457, 43044, 51612, 53383, 55704, 58236, 78914, 82501, 86088, 103224, 106766, 116472, 118371, 157828, 160149, 165002, 213532, 236742, 247503, 315656, 320298, 330004, 427064, 473484, 495006, 640596, 660008, 907511, 946968, 990012, 1281192, 1815022, 1980024, 2722533, 3630044, 5445066, 7260088, 10890132, 21780264]

約数ペア:

[(1, 21780264), (2, 10890132), (3, 7260088), (4, 5445066), (6, 3630044), (8, 2722533), (11, 1980024), (12, 1815022), (17, 1281192), (22, 990012), (23, 946968), (24, 907511), (33, 660008), (34, 640596), (44, 495006), (46, 473484), (51, 427064), (66, 330004), (68, 320298), (69, 315656), (88, 247503), (92, 236742), (102, 213532), (132, 165002), (136, 160149), (138, 157828), (184, 118371), (187, 116472), (204, 106766), (211, 103224), (253, 86088), (264, 82501), (276, 78914), (374, 58236), (391, 55704), (408, 53383), (422, 51612), (506, 43044), (552, 39457), (561, 38824), (633, 34408), (748, 29118), (759, 28696), (782, 27852), (844, 25806), (1012, 21522), (1122, 19412), (1173, 18568), (1266, 17204), (1496, 14559), (1518, 14348), (1564, 13926), (1688, 12903), (2024, 10761), (2244, 9706), (2321, 9384), (2346, 9284), (2532, 8602), (3036, 7174), (3128, 6963), (3587, 6072), (4301, 5064), (4488, 4853), (4642, 4692)]