19777648

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{103}}^1\times {\mathrm{1091}}^1$

素因数の和:1213

約数の個数: 40

約数和(自身を含む): 42247296

約数和(自身を除く): 22469648

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 103, 176, 206, 412, 824, 1091, 1133, 1648, 2182, 2266, 4364, 4532, 8728, 9064, 12001, 17456, 18128, 24002, 48004, 96008, 112373, 192016, 224746, 449492, 898984, 1236103, 1797968, 2472206, 4944412, 9888824, 19777648]

約数ペア:

[(1, 19777648), (2, 9888824), (4, 4944412), (8, 2472206), (11, 1797968), (16, 1236103), (22, 898984), (44, 449492), (88, 224746), (103, 192016), (176, 112373), (206, 96008), (412, 48004), (824, 24002), (1091, 18128), (1133, 17456), (1648, 12001), (2182, 9064), (2266, 8728), (4364, 4532)]