21371142

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{227}}^1$

素因数の和:333

約数の個数: 64

約数和(自身を含む): 49641984

約数和(自身を除く): 28270842

約数列:

[1, 2, 3, 6, 13, 17, 26, 34, 39, 51, 71, 78, 102, 142, 213, 221, 227, 426, 442, 454, 663, 681, 923, 1207, 1326, 1362, 1846, 2414, 2769, 2951, 3621, 3859, 5538, 5902, 7242, 7718, 8853, 11577, 15691, 16117, 17706, 23154, 31382, 32234, 47073, 48351, 50167, 94146, 96702, 100334, 150501, 209521, 273989, 301002, 419042, 547978, 628563, 821967, 1257126, 1643934, 3561857, 7123714, 10685571, 21371142]

約数ペア:

[(1, 21371142), (2, 10685571), (3, 7123714), (6, 3561857), (13, 1643934), (17, 1257126), (26, 821967), (34, 628563), (39, 547978), (51, 419042), (71, 301002), (78, 273989), (102, 209521), (142, 150501), (213, 100334), (221, 96702), (227, 94146), (426, 50167), (442, 48351), (454, 47073), (663, 32234), (681, 31382), (923, 23154), (1207, 17706), (1326, 16117), (1362, 15691), (1846, 11577), (2414, 8853), (2769, 7718), (2951, 7242), (3621, 5902), (3859, 5538)]