19130672

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{1489}}^1$

素因数の和:1581

約数の個数: 40

約数和(自身を含む): 41016720

約数和(自身を除く): 21886048

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 73, 88, 146, 176, 292, 584, 803, 1168, 1489, 1606, 2978, 3212, 5956, 6424, 11912, 12848, 16379, 23824, 32758, 65516, 108697, 131032, 217394, 262064, 434788, 869576, 1195667, 1739152, 2391334, 4782668, 9565336, 19130672]

約数ペア:

[(1, 19130672), (2, 9565336), (4, 4782668), (8, 2391334), (11, 1739152), (16, 1195667), (22, 869576), (44, 434788), (73, 262064), (88, 217394), (146, 131032), (176, 108697), (292, 65516), (584, 32758), (803, 23824), (1168, 16379), (1489, 12848), (1606, 11912), (2978, 6424), (3212, 5956)]