21377148

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^2\times {\mathrm{83}}^1\times {\mathrm{127}}^1$

素因数の和:243

約数の個数: 72

約数和(自身を含む): 55093248

約数和(自身を除く): 33716100

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 83, 127, 156, 166, 169, 249, 254, 332, 338, 381, 498, 507, 508, 676, 762, 996, 1014, 1079, 1524, 1651, 2028, 2158, 3237, 3302, 4316, 4953, 6474, 6604, 9906, 10541, 12948, 14027, 19812, 21082, 21463, 28054, 31623, 42081, 42164, 42926, 56108, 63246, 64389, 84162, 85852, 126492, 128778, 137033, 168324, 257556, 274066, 411099, 548132, 822198, 1644396, 1781429, 3562858, 5344287, 7125716, 10688574, 21377148]

約数ペア:

[(1, 21377148), (2, 10688574), (3, 7125716), (4, 5344287), (6, 3562858), (12, 1781429), (13, 1644396), (26, 822198), (39, 548132), (52, 411099), (78, 274066), (83, 257556), (127, 168324), (156, 137033), (166, 128778), (169, 126492), (249, 85852), (254, 84162), (332, 64389), (338, 63246), (381, 56108), (498, 42926), (507, 42164), (508, 42081), (676, 31623), (762, 28054), (996, 21463), (1014, 21082), (1079, 19812), (1524, 14027), (1651, 12948), (2028, 10541), (2158, 9906), (3237, 6604), (3302, 6474), (4316, 4953)]