20687504

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{4003}}^1$

素因数の和:4047

約数の個数: 40

約数和(自身を含む): 44684640

約数和(自身を除く): 23997136

約数列:

[1, 2, 4, 8, 16, 17, 19, 34, 38, 68, 76, 136, 152, 272, 304, 323, 646, 1292, 2584, 4003, 5168, 8006, 16012, 32024, 64048, 68051, 76057, 136102, 152114, 272204, 304228, 544408, 608456, 1088816, 1216912, 1292969, 2585938, 5171876, 10343752, 20687504]

約数ペア:

[(1, 20687504), (2, 10343752), (4, 5171876), (8, 2585938), (16, 1292969), (17, 1216912), (19, 1088816), (34, 608456), (38, 544408), (68, 304228), (76, 272204), (136, 152114), (152, 136102), (272, 76057), (304, 68051), (323, 64048), (646, 32024), (1292, 16012), (2584, 8006), (4003, 5168)]