21381570

素因数分解:

$2^1\times 3^6\times 5^1\times 7^1\times {\mathrm{419}}^1$

素因数の和:451

約数の個数: 112

約数和(自身を含む): 66104640

約数和(自身を除く): 44723070

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 27, 30, 35, 42, 45, 54, 63, 70, 81, 90, 105, 126, 135, 162, 189, 210, 243, 270, 315, 378, 405, 419, 486, 567, 630, 729, 810, 838, 945, 1134, 1215, 1257, 1458, 1701, 1890, 2095, 2430, 2514, 2835, 2933, 3402, 3645, 3771, 4190, 5103, 5670, 5866, 6285, 7290, 7542, 8505, 8799, 10206, 11313, 12570, 14665, 17010, 17598, 18855, 22626, 25515, 26397, 29330, 33939, 37710, 43995, 51030, 52794, 56565, 67878, 79191, 87990, 101817, 113130, 131985, 158382, 169695, 203634, 237573, 263970, 305451, 339390, 395955, 475146, 509085, 610902, 712719, 791910, 1018170, 1187865, 1425438, 1527255, 2138157, 2375730, 3054510, 3563595, 4276314, 7127190, 10690785, 21381570]

約数ペア:

[(1, 21381570), (2, 10690785), (3, 7127190), (5, 4276314), (6, 3563595), (7, 3054510), (9, 2375730), (10, 2138157), (14, 1527255), (15, 1425438), (18, 1187865), (21, 1018170), (27, 791910), (30, 712719), (35, 610902), (42, 509085), (45, 475146), (54, 395955), (63, 339390), (70, 305451), (81, 263970), (90, 237573), (105, 203634), (126, 169695), (135, 158382), (162, 131985), (189, 113130), (210, 101817), (243, 87990), (270, 79191), (315, 67878), (378, 56565), (405, 52794), (419, 51030), (486, 43995), (567, 37710), (630, 33939), (729, 29330), (810, 26397), (838, 25515), (945, 22626), (1134, 18855), (1215, 17598), (1257, 17010), (1458, 14665), (1701, 12570), (1890, 11313), (2095, 10206), (2430, 8799), (2514, 8505), (2835, 7542), (2933, 7290), (3402, 6285), (3645, 5866), (3771, 5670), (4190, 5103)]