19811824

素因数分解:

$2^4\times {\mathrm{53}}^1\times {\mathrm{61}}^1\times {\mathrm{383}}^1$

素因数の和:505

約数の個数: 40

約数和(自身を含む): 39854592

約数和(自身を除く): 20042768

約数列:

[1, 2, 4, 8, 16, 53, 61, 106, 122, 212, 244, 383, 424, 488, 766, 848, 976, 1532, 3064, 3233, 6128, 6466, 12932, 20299, 23363, 25864, 40598, 46726, 51728, 81196, 93452, 162392, 186904, 324784, 373808, 1238239, 2476478, 4952956, 9905912, 19811824]

約数ペア:

[(1, 19811824), (2, 9905912), (4, 4952956), (8, 2476478), (16, 1238239), (53, 373808), (61, 324784), (106, 186904), (122, 162392), (212, 93452), (244, 81196), (383, 51728), (424, 46726), (488, 40598), (766, 25864), (848, 23363), (976, 20299), (1532, 12932), (3064, 6466), (3233, 6128)]