81312088

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{113}}^1$

素因数の和:197

約数の個数: 128

約数和(自身を含む): 196499520

約数和(自身を除く): 115187432

約数列:

[1, 2, 4, 8, 11, 13, 17, 22, 26, 34, 37, 44, 52, 68, 74, 88, 104, 113, 136, 143, 148, 187, 221, 226, 286, 296, 374, 407, 442, 452, 481, 572, 629, 748, 814, 884, 904, 962, 1144, 1243, 1258, 1469, 1496, 1628, 1768, 1921, 1924, 2431, 2486, 2516, 2938, 3256, 3842, 3848, 4181, 4862, 4972, 5032, 5291, 5876, 6919, 7684, 8177, 8362, 9724, 9944, 10582, 11752, 13838, 15368, 16159, 16354, 16724, 19448, 21131, 21164, 24973, 27676, 32318, 32708, 33448, 42262, 42328, 45991, 49946, 54353, 55352, 64636, 65416, 71077, 84524, 89947, 91982, 99892, 108706, 129272, 142154, 169048, 179894, 183964, 199784, 217412, 274703, 284308, 359788, 367928, 434824, 549406, 568616, 597883, 719576, 781847, 924001, 1098812, 1195766, 1563694, 1848002, 2197624, 2391532, 3127388, 3696004, 4783064, 6254776, 7392008, 10164011, 20328022, 40656044, 81312088]

約数ペア:

[(1, 81312088), (2, 40656044), (4, 20328022), (8, 10164011), (11, 7392008), (13, 6254776), (17, 4783064), (22, 3696004), (26, 3127388), (34, 2391532), (37, 2197624), (44, 1848002), (52, 1563694), (68, 1195766), (74, 1098812), (88, 924001), (104, 781847), (113, 719576), (136, 597883), (143, 568616), (148, 549406), (187, 434824), (221, 367928), (226, 359788), (286, 284308), (296, 274703), (374, 217412), (407, 199784), (442, 183964), (452, 179894), (481, 169048), (572, 142154), (629, 129272), (748, 108706), (814, 99892), (884, 91982), (904, 89947), (962, 84524), (1144, 71077), (1243, 65416), (1258, 64636), (1469, 55352), (1496, 54353), (1628, 49946), (1768, 45991), (1921, 42328), (1924, 42262), (2431, 33448), (2486, 32708), (2516, 32318), (2938, 27676), (3256, 24973), (3842, 21164), (3848, 21131), (4181, 19448), (4862, 16724), (4972, 16354), (5032, 16159), (5291, 15368), (5876, 13838), (6919, 11752), (7684, 10582), (8177, 9944), (8362, 9724)]