20474748

素因数分解:

$2^2\times 3^3\times 7^2\times {\mathrm{53}}^1\times {\mathrm{73}}^1$

素因数の和:153

約数の個数: 144

約数和(自身を含む): 63776160

約数和(自身を除く): 43301412

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 27, 28, 36, 42, 49, 53, 54, 63, 73, 84, 98, 106, 108, 126, 146, 147, 159, 189, 196, 212, 219, 252, 292, 294, 318, 371, 378, 438, 441, 477, 511, 588, 636, 657, 742, 756, 876, 882, 954, 1022, 1113, 1314, 1323, 1431, 1484, 1533, 1764, 1908, 1971, 2044, 2226, 2597, 2628, 2646, 2862, 3066, 3339, 3577, 3869, 3942, 4452, 4599, 5194, 5292, 5724, 6132, 6678, 7154, 7738, 7791, 7884, 9198, 10017, 10388, 10731, 11607, 13356, 13797, 14308, 15476, 15582, 18396, 20034, 21462, 23214, 23373, 27083, 27594, 31164, 32193, 34821, 40068, 42924, 46428, 46746, 54166, 55188, 64386, 69642, 70119, 81249, 93492, 96579, 104463, 108332, 128772, 139284, 140238, 162498, 189581, 193158, 208926, 243747, 280476, 324996, 379162, 386316, 417852, 487494, 568743, 731241, 758324, 974988, 1137486, 1462482, 1706229, 2274972, 2924964, 3412458, 5118687, 6824916, 10237374, 20474748]

約数ペア:

[(1, 20474748), (2, 10237374), (3, 6824916), (4, 5118687), (6, 3412458), (7, 2924964), (9, 2274972), (12, 1706229), (14, 1462482), (18, 1137486), (21, 974988), (27, 758324), (28, 731241), (36, 568743), (42, 487494), (49, 417852), (53, 386316), (54, 379162), (63, 324996), (73, 280476), (84, 243747), (98, 208926), (106, 193158), (108, 189581), (126, 162498), (146, 140238), (147, 139284), (159, 128772), (189, 108332), (196, 104463), (212, 96579), (219, 93492), (252, 81249), (292, 70119), (294, 69642), (318, 64386), (371, 55188), (378, 54166), (438, 46746), (441, 46428), (477, 42924), (511, 40068), (588, 34821), (636, 32193), (657, 31164), (742, 27594), (756, 27083), (876, 23373), (882, 23214), (954, 21462), (1022, 20034), (1113, 18396), (1314, 15582), (1323, 15476), (1431, 14308), (1484, 13797), (1533, 13356), (1764, 11607), (1908, 10731), (1971, 10388), (2044, 10017), (2226, 9198), (2597, 7884), (2628, 7791), (2646, 7738), (2862, 7154), (3066, 6678), (3339, 6132), (3577, 5724), (3869, 5292), (3942, 5194), (4452, 4599)]