19891564

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{131}}^1$

素因数の和:199

約数の個数: 96

約数和(自身を含む): 47900160

約数和(自身を除く): 28008596

約数列:

[1, 2, 4, 7, 11, 14, 17, 22, 28, 29, 34, 44, 58, 68, 77, 116, 119, 131, 154, 187, 203, 238, 262, 308, 319, 374, 406, 476, 493, 524, 638, 748, 812, 917, 986, 1276, 1309, 1441, 1834, 1972, 2227, 2233, 2618, 2882, 3451, 3668, 3799, 4454, 4466, 5236, 5423, 5764, 6902, 7598, 8908, 8932, 10087, 10846, 13804, 15196, 15589, 20174, 21692, 24497, 26593, 31178, 37961, 40348, 41789, 48994, 53186, 62356, 64583, 75922, 83578, 97988, 106372, 129166, 151844, 167156, 171479, 258332, 292523, 342958, 452081, 585046, 685916, 710413, 904162, 1170092, 1420826, 1808324, 2841652, 4972891, 9945782, 19891564]

約数ペア:

[(1, 19891564), (2, 9945782), (4, 4972891), (7, 2841652), (11, 1808324), (14, 1420826), (17, 1170092), (22, 904162), (28, 710413), (29, 685916), (34, 585046), (44, 452081), (58, 342958), (68, 292523), (77, 258332), (116, 171479), (119, 167156), (131, 151844), (154, 129166), (187, 106372), (203, 97988), (238, 83578), (262, 75922), (308, 64583), (319, 62356), (374, 53186), (406, 48994), (476, 41789), (493, 40348), (524, 37961), (638, 31178), (748, 26593), (812, 24497), (917, 21692), (986, 20174), (1276, 15589), (1309, 15196), (1441, 13804), (1834, 10846), (1972, 10087), (2227, 8932), (2233, 8908), (2618, 7598), (2882, 6902), (3451, 5764), (3668, 5423), (3799, 5236), (4454, 4466)]