21770280

素因数分解:

$2^3\times 3^2\times 5^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{163}}^1$

素因数の和:240

約数の個数: 192

約数和(自身を含む): 82892160

約数和(自身を除く): 61121880

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 24, 28, 30, 35, 36, 40, 42, 45, 53, 56, 60, 63, 70, 72, 84, 90, 105, 106, 120, 126, 140, 159, 163, 168, 180, 210, 212, 252, 265, 280, 315, 318, 326, 360, 371, 420, 424, 477, 489, 504, 530, 630, 636, 652, 742, 795, 815, 840, 954, 978, 1060, 1113, 1141, 1260, 1272, 1304, 1467, 1484, 1590, 1630, 1855, 1908, 1956, 2120, 2226, 2282, 2385, 2445, 2520, 2934, 2968, 3180, 3260, 3339, 3423, 3710, 3816, 3912, 4452, 4564, 4770, 4890, 5565, 5705, 5868, 6360, 6520, 6678, 6846, 7335, 7420, 8639, 8904, 9128, 9540, 9780, 10269, 11130, 11410, 11736, 13356, 13692, 14670, 14840, 16695, 17115, 17278, 19080, 19560, 20538, 22260, 22820, 25917, 26712, 27384, 29340, 33390, 34230, 34556, 41076, 43195, 44520, 45640, 51345, 51834, 58680, 60473, 66780, 68460, 69112, 77751, 82152, 86390, 102690, 103668, 120946, 129585, 133560, 136920, 155502, 172780, 181419, 205380, 207336, 241892, 259170, 302365, 311004, 345560, 362838, 388755, 410760, 483784, 518340, 544257, 604730, 622008, 725676, 777510, 907095, 1036680, 1088514, 1209460, 1451352, 1555020, 1814190, 2177028, 2418920, 2721285, 3110040, 3628380, 4354056, 5442570, 7256760, 10885140, 21770280]

約数ペア:

[(1, 21770280), (2, 10885140), (3, 7256760), (4, 5442570), (5, 4354056), (6, 3628380), (7, 3110040), (8, 2721285), (9, 2418920), (10, 2177028), (12, 1814190), (14, 1555020), (15, 1451352), (18, 1209460), (20, 1088514), (21, 1036680), (24, 907095), (28, 777510), (30, 725676), (35, 622008), (36, 604730), (40, 544257), (42, 518340), (45, 483784), (53, 410760), (56, 388755), (60, 362838), (63, 345560), (70, 311004), (72, 302365), (84, 259170), (90, 241892), (105, 207336), (106, 205380), (120, 181419), (126, 172780), (140, 155502), (159, 136920), (163, 133560), (168, 129585), (180, 120946), (210, 103668), (212, 102690), (252, 86390), (265, 82152), (280, 77751), (315, 69112), (318, 68460), (326, 66780), (360, 60473), (371, 58680), (420, 51834), (424, 51345), (477, 45640), (489, 44520), (504, 43195), (530, 41076), (630, 34556), (636, 34230), (652, 33390), (742, 29340), (795, 27384), (815, 26712), (840, 25917), (954, 22820), (978, 22260), (1060, 20538), (1113, 19560), (1141, 19080), (1260, 17278), (1272, 17115), (1304, 16695), (1467, 14840), (1484, 14670), (1590, 13692), (1630, 13356), (1855, 11736), (1908, 11410), (1956, 11130), (2120, 10269), (2226, 9780), (2282, 9540), (2385, 9128), (2445, 8904), (2520, 8639), (2934, 7420), (2968, 7335), (3180, 6846), (3260, 6678), (3339, 6520), (3423, 6360), (3710, 5868), (3816, 5705), (3912, 5565), (4452, 4890), (4564, 4770)]