21122656

素因数分解:

$2^5\times {\mathrm{31}}^1\times {\mathrm{107}}^1\times {\mathrm{199}}^1$

素因数の和:347

約数の個数: 48

約数和(自身を含む): 43545600

約数和(自身を除く): 22422944

約数列:

[1, 2, 4, 8, 16, 31, 32, 62, 107, 124, 199, 214, 248, 398, 428, 496, 796, 856, 992, 1592, 1712, 3184, 3317, 3424, 6169, 6368, 6634, 12338, 13268, 21293, 24676, 26536, 42586, 49352, 53072, 85172, 98704, 106144, 170344, 197408, 340688, 660083, 681376, 1320166, 2640332, 5280664, 10561328, 21122656]

約数ペア:

[(1, 21122656), (2, 10561328), (4, 5280664), (8, 2640332), (16, 1320166), (31, 681376), (32, 660083), (62, 340688), (107, 197408), (124, 170344), (199, 106144), (214, 98704), (248, 85172), (398, 53072), (428, 49352), (496, 42586), (796, 26536), (856, 24676), (992, 21293), (1592, 13268), (1712, 12338), (3184, 6634), (3317, 6368), (3424, 6169)]