21617778

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{137}}^1$

素因数の和:196

約数の個数: 96

約数和(自身を含む): 56939904

約数和(自身を除く): 35322126

約数列:

[1, 2, 3, 6, 7, 13, 14, 17, 21, 26, 34, 39, 42, 51, 78, 91, 102, 119, 137, 182, 221, 238, 273, 274, 289, 357, 411, 442, 546, 578, 663, 714, 822, 867, 959, 1326, 1547, 1734, 1781, 1918, 2023, 2329, 2877, 3094, 3562, 3757, 4046, 4641, 4658, 5343, 5754, 6069, 6987, 7514, 9282, 10686, 11271, 12138, 12467, 13974, 16303, 22542, 24934, 26299, 30277, 32606, 37401, 39593, 48909, 52598, 60554, 74802, 78897, 79186, 90831, 97818, 118779, 157794, 181662, 211939, 237558, 277151, 423878, 514709, 554302, 635817, 831453, 1029418, 1271634, 1544127, 1662906, 3088254, 3602963, 7205926, 10808889, 21617778]

約数ペア:

[(1, 21617778), (2, 10808889), (3, 7205926), (6, 3602963), (7, 3088254), (13, 1662906), (14, 1544127), (17, 1271634), (21, 1029418), (26, 831453), (34, 635817), (39, 554302), (42, 514709), (51, 423878), (78, 277151), (91, 237558), (102, 211939), (119, 181662), (137, 157794), (182, 118779), (221, 97818), (238, 90831), (273, 79186), (274, 78897), (289, 74802), (357, 60554), (411, 52598), (442, 48909), (546, 39593), (578, 37401), (663, 32606), (714, 30277), (822, 26299), (867, 24934), (959, 22542), (1326, 16303), (1547, 13974), (1734, 12467), (1781, 12138), (1918, 11271), (2023, 10686), (2329, 9282), (2877, 7514), (3094, 6987), (3562, 6069), (3757, 5754), (4046, 5343), (4641, 4658)]