21636016

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{181}}^1\times {\mathrm{241}}^1$

素因数の和:461

約数の個数: 40

約数和(自身を含む): 43691648

約数和(自身を除く): 22055632

約数列:

[1, 2, 4, 8, 16, 31, 62, 124, 181, 241, 248, 362, 482, 496, 724, 964, 1448, 1928, 2896, 3856, 5611, 7471, 11222, 14942, 22444, 29884, 43621, 44888, 59768, 87242, 89776, 119536, 174484, 348968, 697936, 1352251, 2704502, 5409004, 10818008, 21636016]

約数ペア:

[(1, 21636016), (2, 10818008), (4, 5409004), (8, 2704502), (16, 1352251), (31, 697936), (62, 348968), (124, 174484), (181, 119536), (241, 89776), (248, 87242), (362, 59768), (482, 44888), (496, 43621), (724, 29884), (964, 22444), (1448, 14942), (1928, 11222), (2896, 7471), (3856, 5611)]