21270128

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{7109}}^1$

素因数の和:7145

約数の個数: 40

約数和(自身を含む): 47608560

約数和(自身を除く): 26338432

約数列:

[1, 2, 4, 8, 11, 16, 17, 22, 34, 44, 68, 88, 136, 176, 187, 272, 374, 748, 1496, 2992, 7109, 14218, 28436, 56872, 78199, 113744, 120853, 156398, 241706, 312796, 483412, 625592, 966824, 1251184, 1329383, 1933648, 2658766, 5317532, 10635064, 21270128]

約数ペア:

[(1, 21270128), (2, 10635064), (4, 5317532), (8, 2658766), (11, 1933648), (16, 1329383), (17, 1251184), (22, 966824), (34, 625592), (44, 483412), (68, 312796), (88, 241706), (136, 156398), (176, 120853), (187, 113744), (272, 78199), (374, 56872), (748, 28436), (1496, 14218), (2992, 7109)]