21047858

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{137}}^1\times {\mathrm{311}}^1$

素因数の和:482

約数の個数: 32

約数和(自身を含む): 36167040

約数和(自身を除く): 15119182

約数列:

[1, 2, 13, 19, 26, 38, 137, 247, 274, 311, 494, 622, 1781, 2603, 3562, 4043, 5206, 5909, 8086, 11818, 33839, 42607, 67678, 76817, 85214, 153634, 553891, 809533, 1107782, 1619066, 10523929, 21047858]

約数ペア:

[(1, 21047858), (2, 10523929), (13, 1619066), (19, 1107782), (26, 809533), (38, 553891), (137, 153634), (247, 85214), (274, 76817), (311, 67678), (494, 42607), (622, 33839), (1781, 11818), (2603, 8086), (3562, 5909), (4043, 5206)]