19926992

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{1201}}^1$

素因数の和:1287

約数の個数: 40

約数和(自身を含む): 41584392

約数和(自身を除く): 21657400

約数列:

[1, 2, 4, 8, 16, 17, 34, 61, 68, 122, 136, 244, 272, 488, 976, 1037, 1201, 2074, 2402, 4148, 4804, 8296, 9608, 16592, 19216, 20417, 40834, 73261, 81668, 146522, 163336, 293044, 326672, 586088, 1172176, 1245437, 2490874, 4981748, 9963496, 19926992]

約数ペア:

[(1, 19926992), (2, 9963496), (4, 4981748), (8, 2490874), (16, 1245437), (17, 1172176), (34, 586088), (61, 326672), (68, 293044), (122, 163336), (136, 146522), (244, 81668), (272, 73261), (488, 40834), (976, 20417), (1037, 19216), (1201, 16592), (2074, 9608), (2402, 8296), (4148, 4804)]