19781432

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{11831}}^1$

素因数の和:11867

約数の個数: 32

約数和(自身を含む): 42595200

約数和(自身を除く): 22813768

約数列:

[1, 2, 4, 8, 11, 19, 22, 38, 44, 76, 88, 152, 209, 418, 836, 1672, 11831, 23662, 47324, 94648, 130141, 224789, 260282, 449578, 520564, 899156, 1041128, 1798312, 2472679, 4945358, 9890716, 19781432]

約数ペア:

[(1, 19781432), (2, 9890716), (4, 4945358), (8, 2472679), (11, 1798312), (19, 1041128), (22, 899156), (38, 520564), (44, 449578), (76, 260282), (88, 224789), (152, 130141), (209, 94648), (418, 47324), (836, 23662), (1672, 11831)]