21905248

素因数分解:

$2^5\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{601}}^1$

素因数の和:695

約数の個数: 48

約数和(自身を含む): 46421424

約数和(自身を除く): 24516176

約数列:

[1, 2, 4, 8, 16, 17, 32, 34, 67, 68, 134, 136, 268, 272, 536, 544, 601, 1072, 1139, 1202, 2144, 2278, 2404, 4556, 4808, 9112, 9616, 10217, 18224, 19232, 20434, 36448, 40267, 40868, 80534, 81736, 161068, 163472, 322136, 326944, 644272, 684539, 1288544, 1369078, 2738156, 5476312, 10952624, 21905248]

約数ペア:

[(1, 21905248), (2, 10952624), (4, 5476312), (8, 2738156), (16, 1369078), (17, 1288544), (32, 684539), (34, 644272), (67, 326944), (68, 322136), (134, 163472), (136, 161068), (268, 81736), (272, 80534), (536, 40868), (544, 40267), (601, 36448), (1072, 20434), (1139, 19232), (1202, 18224), (2144, 10217), (2278, 9616), (2404, 9112), (4556, 4808)]