21691440

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{641}}^1$

素因数の和:707

約数の個数: 120

約数和(自身を含む): 74513088

約数和(自身を除く): 52821648

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 47, 48, 60, 72, 80, 90, 94, 120, 141, 144, 180, 188, 235, 240, 282, 360, 376, 423, 470, 564, 641, 705, 720, 752, 846, 940, 1128, 1282, 1410, 1692, 1880, 1923, 2115, 2256, 2564, 2820, 3205, 3384, 3760, 3846, 4230, 5128, 5640, 5769, 6410, 6768, 7692, 8460, 9615, 10256, 11280, 11538, 12820, 15384, 16920, 19230, 23076, 25640, 28845, 30127, 30768, 33840, 38460, 46152, 51280, 57690, 60254, 76920, 90381, 92304, 115380, 120508, 150635, 153840, 180762, 230760, 241016, 271143, 301270, 361524, 451905, 461520, 482032, 542286, 602540, 723048, 903810, 1084572, 1205080, 1355715, 1446096, 1807620, 2169144, 2410160, 2711430, 3615240, 4338288, 5422860, 7230480, 10845720, 21691440]

約数ペア:

[(1, 21691440), (2, 10845720), (3, 7230480), (4, 5422860), (5, 4338288), (6, 3615240), (8, 2711430), (9, 2410160), (10, 2169144), (12, 1807620), (15, 1446096), (16, 1355715), (18, 1205080), (20, 1084572), (24, 903810), (30, 723048), (36, 602540), (40, 542286), (45, 482032), (47, 461520), (48, 451905), (60, 361524), (72, 301270), (80, 271143), (90, 241016), (94, 230760), (120, 180762), (141, 153840), (144, 150635), (180, 120508), (188, 115380), (235, 92304), (240, 90381), (282, 76920), (360, 60254), (376, 57690), (423, 51280), (470, 46152), (564, 38460), (641, 33840), (705, 30768), (720, 30127), (752, 28845), (846, 25640), (940, 23076), (1128, 19230), (1282, 16920), (1410, 15384), (1692, 12820), (1880, 11538), (1923, 11280), (2115, 10256), (2256, 9615), (2564, 8460), (2820, 7692), (3205, 6768), (3384, 6410), (3760, 5769), (3846, 5640), (4230, 5128)]