21224528

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{1523}}^1$

素因数の和:1611

約数の個数: 40

約数和(自身を含む): 44976288

約数和(自身を除く): 23751760

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 67, 104, 134, 208, 268, 536, 871, 1072, 1523, 1742, 3046, 3484, 6092, 6968, 12184, 13936, 19799, 24368, 39598, 79196, 102041, 158392, 204082, 316784, 408164, 816328, 1326533, 1632656, 2653066, 5306132, 10612264, 21224528]

約数ペア:

[(1, 21224528), (2, 10612264), (4, 5306132), (8, 2653066), (13, 1632656), (16, 1326533), (26, 816328), (52, 408164), (67, 316784), (104, 204082), (134, 158392), (208, 102041), (268, 79196), (536, 39598), (871, 24368), (1072, 19799), (1523, 13936), (1742, 12184), (3046, 6968), (3484, 6092)]