20820856

素因数分解:

$2^3\times 7^1\times {\mathrm{97}}^1\times {\mathrm{3833}}^1$

素因数の和:3943

約数の個数: 32

約数和(自身を含む): 45087840

約数和(自身を除く): 24266984

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 97, 194, 388, 679, 776, 1358, 2716, 3833, 5432, 7666, 15332, 26831, 30664, 53662, 107324, 214648, 371801, 743602, 1487204, 2602607, 2974408, 5205214, 10410428, 20820856]

約数ペア:

[(1, 20820856), (2, 10410428), (4, 5205214), (7, 2974408), (8, 2602607), (14, 1487204), (28, 743602), (56, 371801), (97, 214648), (194, 107324), (388, 53662), (679, 30664), (776, 26831), (1358, 15332), (2716, 7666), (3833, 5432)]