21622860

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{131}}^2$

素因数の和:284

約数の個数: 108

約数和(自身を含む): 75535824

約数和(自身を除く): 53912964

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 131, 140, 180, 210, 252, 262, 315, 393, 420, 524, 630, 655, 786, 917, 1179, 1260, 1310, 1572, 1834, 1965, 2358, 2620, 2751, 3668, 3930, 4585, 4716, 5502, 5895, 7860, 8253, 9170, 11004, 11790, 13755, 16506, 17161, 18340, 23580, 27510, 33012, 34322, 41265, 51483, 55020, 68644, 82530, 85805, 102966, 120127, 154449, 165060, 171610, 205932, 240254, 257415, 308898, 343220, 360381, 480508, 514830, 600635, 617796, 720762, 772245, 1029660, 1081143, 1201270, 1441524, 1544490, 1801905, 2162286, 2402540, 3088980, 3603810, 4324572, 5405715, 7207620, 10811430, 21622860]

約数ペア:

[(1, 21622860), (2, 10811430), (3, 7207620), (4, 5405715), (5, 4324572), (6, 3603810), (7, 3088980), (9, 2402540), (10, 2162286), (12, 1801905), (14, 1544490), (15, 1441524), (18, 1201270), (20, 1081143), (21, 1029660), (28, 772245), (30, 720762), (35, 617796), (36, 600635), (42, 514830), (45, 480508), (60, 360381), (63, 343220), (70, 308898), (84, 257415), (90, 240254), (105, 205932), (126, 171610), (131, 165060), (140, 154449), (180, 120127), (210, 102966), (252, 85805), (262, 82530), (315, 68644), (393, 55020), (420, 51483), (524, 41265), (630, 34322), (655, 33012), (786, 27510), (917, 23580), (1179, 18340), (1260, 17161), (1310, 16506), (1572, 13755), (1834, 11790), (1965, 11004), (2358, 9170), (2620, 8253), (2751, 7860), (3668, 5895), (3930, 5502), (4585, 4716)]