641020016

素因数分解:

$2^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{440261}}^1$

素因数の和:440289

約数の個数: 40

約数和(自身を含む): 1528589664

約数和(自身を除く): 887569648

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 52, 56, 91, 104, 112, 182, 208, 364, 728, 1456, 440261, 880522, 1761044, 3081827, 3522088, 5723393, 6163654, 7044176, 11446786, 12327308, 22893572, 24654616, 40063751, 45787144, 49309232, 80127502, 91574288, 160255004, 320510008, 641020016]

約数ペア:

[(1, 641020016), (2, 320510008), (4, 160255004), (7, 91574288), (8, 80127502), (13, 49309232), (14, 45787144), (16, 40063751), (26, 24654616), (28, 22893572), (52, 12327308), (56, 11446786), (91, 7044176), (104, 6163654), (112, 5723393), (182, 3522088), (208, 3081827), (364, 1761044), (728, 880522), (1456, 440261)]