21559416

素因数分解:

$2^3\times 3^1\times {\mathrm{79}}^1\times {\mathrm{83}}^1\times {\mathrm{137}}^1$

素因数の和:308

約数の個数: 64

約数和(自身を含む): 55641600

約数和(自身を除く): 34082184

約数列:

[1, 2, 3, 4, 6, 8, 12, 24, 79, 83, 137, 158, 166, 237, 249, 274, 316, 332, 411, 474, 498, 548, 632, 664, 822, 948, 996, 1096, 1644, 1896, 1992, 3288, 6557, 10823, 11371, 13114, 19671, 21646, 22742, 26228, 32469, 34113, 39342, 43292, 45484, 52456, 64938, 68226, 78684, 86584, 90968, 129876, 136452, 157368, 259752, 272904, 898309, 1796618, 2694927, 3593236, 5389854, 7186472, 10779708, 21559416]

約数ペア:

[(1, 21559416), (2, 10779708), (3, 7186472), (4, 5389854), (6, 3593236), (8, 2694927), (12, 1796618), (24, 898309), (79, 272904), (83, 259752), (137, 157368), (158, 136452), (166, 129876), (237, 90968), (249, 86584), (274, 78684), (316, 68226), (332, 64938), (411, 52456), (474, 45484), (498, 43292), (548, 39342), (632, 34113), (664, 32469), (822, 26228), (948, 22742), (996, 21646), (1096, 19671), (1644, 13114), (1896, 11371), (1992, 10823), (3288, 6557)]