21207958082

素因数分解:

$2^1\times {\mathrm{17}}^2\times {\mathrm{23}}^2\times {\mathrm{139}}^1\times {\mathrm{499}}^1$

素因数の和:720

約数の個数: 72

約数和(自身を含む): 35651910000

約数和(自身を除く): 14443951918

約数列:

[1, 2, 17, 23, 34, 46, 139, 278, 289, 391, 499, 529, 578, 782, 998, 1058, 2363, 3197, 4726, 6394, 6647, 8483, 8993, 11477, 13294, 16966, 17986, 22954, 40171, 54349, 69361, 73531, 80342, 108698, 138722, 144211, 147062, 152881, 195109, 263971, 288422, 305762, 390218, 527942, 923933, 1179137, 1250027, 1595303, 1847866, 2358274, 2500054, 3190606, 3316853, 4487507, 6633706, 8975014, 20045329, 21250459, 27120151, 36691969, 40090658, 42500918, 54240302, 73383938, 76287619, 152575238, 461042567, 623763473, 922085134, 1247526946, 10603979041, 21207958082]

約数ペア:

[(1, 21207958082), (2, 10603979041), (17, 1247526946), (23, 922085134), (34, 623763473), (46, 461042567), (139, 152575238), (278, 76287619), (289, 73383938), (391, 54240302), (499, 42500918), (529, 40090658), (578, 36691969), (782, 27120151), (998, 21250459), (1058, 20045329), (2363, 8975014), (3197, 6633706), (4726, 4487507), (6394, 3316853), (6647, 3190606), (8483, 2500054), (8993, 2358274), (11477, 1847866), (13294, 1595303), (16966, 1250027), (17986, 1179137), (22954, 923933), (40171, 527942), (54349, 390218), (69361, 305762), (73531, 288422), (80342, 263971), (108698, 195109), (138722, 152881), (144211, 147062)]