19984276

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{113}}^1\times {\mathrm{179}}^1$

素因数の和:328

約数の個数: 48

約数和(自身を含む): 40219200

約数和(自身を除く): 20234924

約数列:

[1, 2, 4, 13, 19, 26, 38, 52, 76, 113, 179, 226, 247, 358, 452, 494, 716, 988, 1469, 2147, 2327, 2938, 3401, 4294, 4654, 5876, 6802, 8588, 9308, 13604, 20227, 27911, 40454, 44213, 55822, 80908, 88426, 111644, 176852, 262951, 384313, 525902, 768626, 1051804, 1537252, 4996069, 9992138, 19984276]

約数ペア:

[(1, 19984276), (2, 9992138), (4, 4996069), (13, 1537252), (19, 1051804), (26, 768626), (38, 525902), (52, 384313), (76, 262951), (113, 176852), (179, 111644), (226, 88426), (247, 80908), (358, 55822), (452, 44213), (494, 40454), (716, 27911), (988, 20227), (1469, 13604), (2147, 9308), (2327, 8588), (2938, 6802), (3401, 5876), (4294, 4654)]