19716496

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{127}}^1\times {\mathrm{313}}^1$

素因数の和:479

約数の個数: 40

約数和(自身を含む): 39870464

約数和(自身を除く): 20153968

約数列:

[1, 2, 4, 8, 16, 31, 62, 124, 127, 248, 254, 313, 496, 508, 626, 1016, 1252, 2032, 2504, 3937, 5008, 7874, 9703, 15748, 19406, 31496, 38812, 39751, 62992, 77624, 79502, 155248, 159004, 318008, 636016, 1232281, 2464562, 4929124, 9858248, 19716496]

約数ペア:

[(1, 19716496), (2, 9858248), (4, 4929124), (8, 2464562), (16, 1232281), (31, 636016), (62, 318008), (124, 159004), (127, 155248), (248, 79502), (254, 77624), (313, 62992), (496, 39751), (508, 38812), (626, 31496), (1016, 19406), (1252, 15748), (2032, 9703), (2504, 7874), (3937, 5008)]