20945548

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{83}}^1\times {\mathrm{211}}^1$

素因数の和:334

約数の個数: 48

約数和(自身を含む): 41884416

約数和(自身を除く): 20938868

約数列:

[1, 2, 4, 13, 23, 26, 46, 52, 83, 92, 166, 211, 299, 332, 422, 598, 844, 1079, 1196, 1909, 2158, 2743, 3818, 4316, 4853, 5486, 7636, 9706, 10972, 17513, 19412, 24817, 35026, 49634, 63089, 70052, 99268, 126178, 227669, 252356, 402799, 455338, 805598, 910676, 1611196, 5236387, 10472774, 20945548]

約数ペア:

[(1, 20945548), (2, 10472774), (4, 5236387), (13, 1611196), (23, 910676), (26, 805598), (46, 455338), (52, 402799), (83, 252356), (92, 227669), (166, 126178), (211, 99268), (299, 70052), (332, 63089), (422, 49634), (598, 35026), (844, 24817), (1079, 19412), (1196, 17513), (1909, 10972), (2158, 9706), (2743, 7636), (3818, 5486), (4316, 4853)]