21505248

素因数分解:

$2^5\times 3^2\times {\mathrm{89}}^1\times {\mathrm{839}}^1$

素因数の和:944

約数の個数: 72

約数和(自身を含む): 61916400

約数和(自身を除く): 40411152

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 32, 36, 48, 72, 89, 96, 144, 178, 267, 288, 356, 534, 712, 801, 839, 1068, 1424, 1602, 1678, 2136, 2517, 2848, 3204, 3356, 4272, 5034, 6408, 6712, 7551, 8544, 10068, 12816, 13424, 15102, 20136, 25632, 26848, 30204, 40272, 60408, 74671, 80544, 120816, 149342, 224013, 241632, 298684, 448026, 597368, 672039, 896052, 1194736, 1344078, 1792104, 2389472, 2688156, 3584208, 5376312, 7168416, 10752624, 21505248]

約数ペア:

[(1, 21505248), (2, 10752624), (3, 7168416), (4, 5376312), (6, 3584208), (8, 2688156), (9, 2389472), (12, 1792104), (16, 1344078), (18, 1194736), (24, 896052), (32, 672039), (36, 597368), (48, 448026), (72, 298684), (89, 241632), (96, 224013), (144, 149342), (178, 120816), (267, 80544), (288, 74671), (356, 60408), (534, 40272), (712, 30204), (801, 26848), (839, 25632), (1068, 20136), (1424, 15102), (1602, 13424), (1678, 12816), (2136, 10068), (2517, 8544), (2848, 7551), (3204, 6712), (3356, 6408), (4272, 5034)]