21471996

素因数分解:

$2^2\times 3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{53}}^2$

素因数の和:140

約数の個数: 108

約数和(自身を含む): 63970872

約数和(自身を除く): 42498876

約数列:

[1, 2, 3, 4, 6, 7, 12, 13, 14, 21, 26, 28, 39, 42, 49, 52, 53, 78, 84, 91, 98, 106, 147, 156, 159, 182, 196, 212, 273, 294, 318, 364, 371, 546, 588, 636, 637, 689, 742, 1092, 1113, 1274, 1378, 1484, 1911, 2067, 2226, 2548, 2597, 2756, 2809, 3822, 4134, 4452, 4823, 5194, 5618, 7644, 7791, 8268, 8427, 9646, 10388, 11236, 14469, 15582, 16854, 19292, 19663, 28938, 31164, 33708, 33761, 36517, 39326, 57876, 58989, 67522, 73034, 78652, 101283, 109551, 117978, 135044, 137641, 146068, 202566, 219102, 235956, 255619, 275282, 405132, 412923, 438204, 511238, 550564, 766857, 825846, 1022476, 1533714, 1651692, 1789333, 3067428, 3578666, 5367999, 7157332, 10735998, 21471996]

約数ペア:

[(1, 21471996), (2, 10735998), (3, 7157332), (4, 5367999), (6, 3578666), (7, 3067428), (12, 1789333), (13, 1651692), (14, 1533714), (21, 1022476), (26, 825846), (28, 766857), (39, 550564), (42, 511238), (49, 438204), (52, 412923), (53, 405132), (78, 275282), (84, 255619), (91, 235956), (98, 219102), (106, 202566), (147, 146068), (156, 137641), (159, 135044), (182, 117978), (196, 109551), (212, 101283), (273, 78652), (294, 73034), (318, 67522), (364, 58989), (371, 57876), (546, 39326), (588, 36517), (636, 33761), (637, 33708), (689, 31164), (742, 28938), (1092, 19663), (1113, 19292), (1274, 16854), (1378, 15582), (1484, 14469), (1911, 11236), (2067, 10388), (2226, 9646), (2548, 8427), (2597, 8268), (2756, 7791), (2809, 7644), (3822, 5618), (4134, 5194), (4452, 4823)]