81618840

素因数分解:

$2^3\times 3^8\times 5^1\times {\mathrm{311}}^1$

素因数の和:346

約数の個数: 144

約数和(自身を含む): 276335280

約数和(自身を除く): 194716440

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 36, 40, 45, 54, 60, 72, 81, 90, 108, 120, 135, 162, 180, 216, 243, 270, 311, 324, 360, 405, 486, 540, 622, 648, 729, 810, 933, 972, 1080, 1215, 1244, 1458, 1555, 1620, 1866, 1944, 2187, 2430, 2488, 2799, 2916, 3110, 3240, 3645, 3732, 4374, 4665, 4860, 5598, 5832, 6220, 6561, 7290, 7464, 8397, 8748, 9330, 9720, 10935, 11196, 12440, 13122, 13995, 14580, 16794, 17496, 18660, 21870, 22392, 25191, 26244, 27990, 29160, 32805, 33588, 37320, 41985, 43740, 50382, 52488, 55980, 65610, 67176, 75573, 83970, 87480, 100764, 111960, 125955, 131220, 151146, 167940, 201528, 226719, 251910, 262440, 302292, 335880, 377865, 453438, 503820, 604584, 680157, 755730, 906876, 1007640, 1133595, 1360314, 1511460, 1813752, 2040471, 2267190, 2720628, 3022920, 3400785, 4080942, 4534380, 5441256, 6801570, 8161884, 9068760, 10202355, 13603140, 16323768, 20404710, 27206280, 40809420, 81618840]

約数ペア:

[(1, 81618840), (2, 40809420), (3, 27206280), (4, 20404710), (5, 16323768), (6, 13603140), (8, 10202355), (9, 9068760), (10, 8161884), (12, 6801570), (15, 5441256), (18, 4534380), (20, 4080942), (24, 3400785), (27, 3022920), (30, 2720628), (36, 2267190), (40, 2040471), (45, 1813752), (54, 1511460), (60, 1360314), (72, 1133595), (81, 1007640), (90, 906876), (108, 755730), (120, 680157), (135, 604584), (162, 503820), (180, 453438), (216, 377865), (243, 335880), (270, 302292), (311, 262440), (324, 251910), (360, 226719), (405, 201528), (486, 167940), (540, 151146), (622, 131220), (648, 125955), (729, 111960), (810, 100764), (933, 87480), (972, 83970), (1080, 75573), (1215, 67176), (1244, 65610), (1458, 55980), (1555, 52488), (1620, 50382), (1866, 43740), (1944, 41985), (2187, 37320), (2430, 33588), (2488, 32805), (2799, 29160), (2916, 27990), (3110, 26244), (3240, 25191), (3645, 22392), (3732, 21870), (4374, 18660), (4665, 17496), (4860, 16794), (5598, 14580), (5832, 13995), (6220, 13122), (6561, 12440), (7290, 11196), (7464, 10935), (8397, 9720), (8748, 9330)]