19815952

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{2027}}^1$

素因数の和:2095

約数の個数: 40

約数和(自身を含む): 42247296

約数和(自身を除く): 22431344

約数列:

[1, 2, 4, 8, 13, 16, 26, 47, 52, 94, 104, 188, 208, 376, 611, 752, 1222, 2027, 2444, 4054, 4888, 8108, 9776, 16216, 26351, 32432, 52702, 95269, 105404, 190538, 210808, 381076, 421616, 762152, 1238497, 1524304, 2476994, 4953988, 9907976, 19815952]

約数ペア:

[(1, 19815952), (2, 9907976), (4, 4953988), (8, 2476994), (13, 1524304), (16, 1238497), (26, 762152), (47, 421616), (52, 381076), (94, 210808), (104, 190538), (188, 105404), (208, 95269), (376, 52702), (611, 32432), (752, 26351), (1222, 16216), (2027, 9776), (2444, 8108), (4054, 4888)]