19901112

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{11}}^3\times {\mathrm{89}}^1$

素因数の和:138

約数の個数: 128

約数和(自身を含む): 63244800

約数和(自身を除く): 43343688

約数列:

[1, 2, 3, 4, 6, 7, 8, 11, 12, 14, 21, 22, 24, 28, 33, 42, 44, 56, 66, 77, 84, 88, 89, 121, 132, 154, 168, 178, 231, 242, 264, 267, 308, 356, 363, 462, 484, 534, 616, 623, 712, 726, 847, 924, 968, 979, 1068, 1246, 1331, 1452, 1694, 1848, 1869, 1958, 2136, 2492, 2541, 2662, 2904, 2937, 3388, 3738, 3916, 3993, 4984, 5082, 5324, 5874, 6776, 6853, 7476, 7832, 7986, 9317, 10164, 10648, 10769, 11748, 13706, 14952, 15972, 18634, 20328, 20559, 21538, 23496, 27412, 27951, 31944, 32307, 37268, 41118, 43076, 54824, 55902, 64614, 74536, 75383, 82236, 86152, 111804, 118459, 129228, 150766, 164472, 223608, 226149, 236918, 258456, 301532, 355377, 452298, 473836, 603064, 710754, 829213, 904596, 947672, 1421508, 1658426, 1809192, 2487639, 2843016, 3316852, 4975278, 6633704, 9950556, 19901112]

約数ペア:

[(1, 19901112), (2, 9950556), (3, 6633704), (4, 4975278), (6, 3316852), (7, 2843016), (8, 2487639), (11, 1809192), (12, 1658426), (14, 1421508), (21, 947672), (22, 904596), (24, 829213), (28, 710754), (33, 603064), (42, 473836), (44, 452298), (56, 355377), (66, 301532), (77, 258456), (84, 236918), (88, 226149), (89, 223608), (121, 164472), (132, 150766), (154, 129228), (168, 118459), (178, 111804), (231, 86152), (242, 82236), (264, 75383), (267, 74536), (308, 64614), (356, 55902), (363, 54824), (462, 43076), (484, 41118), (534, 37268), (616, 32307), (623, 31944), (712, 27951), (726, 27412), (847, 23496), (924, 21538), (968, 20559), (979, 20328), (1068, 18634), (1246, 15972), (1331, 14952), (1452, 13706), (1694, 11748), (1848, 10769), (1869, 10648), (1958, 10164), (2136, 9317), (2492, 7986), (2541, 7832), (2662, 7476), (2904, 6853), (2937, 6776), (3388, 5874), (3738, 5324), (3916, 5082), (3993, 4984)]