19557769

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{223}}^1$

素因数の和:325

約数の個数: 32

約数和(自身を含む): 26320896

約数和(自身を除く): 6763127

約数列:

[1, 7, 11, 17, 67, 77, 119, 187, 223, 469, 737, 1139, 1309, 1561, 2453, 3791, 5159, 7973, 12529, 14941, 17171, 26537, 41701, 87703, 104587, 164351, 253997, 291907, 1150457, 1777979, 2793967, 19557769]

約数ペア:

[(1, 19557769), (7, 2793967), (11, 1777979), (17, 1150457), (67, 291907), (77, 253997), (119, 164351), (187, 104587), (223, 87703), (469, 41701), (737, 26537), (1139, 17171), (1309, 14941), (1561, 12529), (2453, 7973), (3791, 5159)]