21121128

素因数分解:

$2^3\times 3^3\times 7^1\times {\mathrm{61}}^1\times {\mathrm{229}}^1$

素因数の和:312

約数の個数: 128

約数和(自身を含む): 68448000

約数和(自身を除く): 47326872

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 18, 21, 24, 27, 28, 36, 42, 54, 56, 61, 63, 72, 84, 108, 122, 126, 168, 183, 189, 216, 229, 244, 252, 366, 378, 427, 458, 488, 504, 549, 687, 732, 756, 854, 916, 1098, 1281, 1374, 1464, 1512, 1603, 1647, 1708, 1832, 2061, 2196, 2562, 2748, 3206, 3294, 3416, 3843, 4122, 4392, 4809, 5124, 5496, 6183, 6412, 6588, 7686, 8244, 9618, 10248, 11529, 12366, 12824, 13176, 13969, 14427, 15372, 16488, 19236, 23058, 24732, 27938, 28854, 30744, 38472, 41907, 43281, 46116, 49464, 55876, 57708, 83814, 86562, 92232, 97783, 111752, 115416, 125721, 167628, 173124, 195566, 251442, 293349, 335256, 346248, 377163, 391132, 502884, 586698, 754326, 782264, 880047, 1005768, 1173396, 1508652, 1760094, 2346792, 2640141, 3017304, 3520188, 5280282, 7040376, 10560564, 21121128]

約数ペア:

[(1, 21121128), (2, 10560564), (3, 7040376), (4, 5280282), (6, 3520188), (7, 3017304), (8, 2640141), (9, 2346792), (12, 1760094), (14, 1508652), (18, 1173396), (21, 1005768), (24, 880047), (27, 782264), (28, 754326), (36, 586698), (42, 502884), (54, 391132), (56, 377163), (61, 346248), (63, 335256), (72, 293349), (84, 251442), (108, 195566), (122, 173124), (126, 167628), (168, 125721), (183, 115416), (189, 111752), (216, 97783), (229, 92232), (244, 86562), (252, 83814), (366, 57708), (378, 55876), (427, 49464), (458, 46116), (488, 43281), (504, 41907), (549, 38472), (687, 30744), (732, 28854), (756, 27938), (854, 24732), (916, 23058), (1098, 19236), (1281, 16488), (1374, 15372), (1464, 14427), (1512, 13969), (1603, 13176), (1647, 12824), (1708, 12366), (1832, 11529), (2061, 10248), (2196, 9618), (2562, 8244), (2748, 7686), (3206, 6588), (3294, 6412), (3416, 6183), (3843, 5496), (4122, 5124), (4392, 4809)]