19975748

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{383}}^1$

素因数の和:476

約数の個数: 48

約数和(自身を含む): 40642560

約数和(自身を除く): 20666812

約数列:

[1, 2, 4, 13, 17, 26, 34, 52, 59, 68, 118, 221, 236, 383, 442, 766, 767, 884, 1003, 1532, 1534, 2006, 3068, 4012, 4979, 6511, 9958, 13022, 13039, 19916, 22597, 26044, 26078, 45194, 52156, 84643, 90388, 169286, 293761, 338572, 384149, 587522, 768298, 1175044, 1536596, 4993937, 9987874, 19975748]

約数ペア:

[(1, 19975748), (2, 9987874), (4, 4993937), (13, 1536596), (17, 1175044), (26, 768298), (34, 587522), (52, 384149), (59, 338572), (68, 293761), (118, 169286), (221, 90388), (236, 84643), (383, 52156), (442, 45194), (766, 26078), (767, 26044), (884, 22597), (1003, 19916), (1532, 13039), (1534, 13022), (2006, 9958), (3068, 6511), (4012, 4979)]