21143320

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{1657}}^1$

素因数の和:1708

約数の個数: 64

約数和(自身を含む): 53719200

約数和(自身を除く): 32575880

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 29, 40, 44, 55, 58, 88, 110, 116, 145, 220, 232, 290, 319, 440, 580, 638, 1160, 1276, 1595, 1657, 2552, 3190, 3314, 6380, 6628, 8285, 12760, 13256, 16570, 18227, 33140, 36454, 48053, 66280, 72908, 91135, 96106, 145816, 182270, 192212, 240265, 364540, 384424, 480530, 528583, 729080, 961060, 1057166, 1922120, 2114332, 2642915, 4228664, 5285830, 10571660, 21143320]

約数ペア:

[(1, 21143320), (2, 10571660), (4, 5285830), (5, 4228664), (8, 2642915), (10, 2114332), (11, 1922120), (20, 1057166), (22, 961060), (29, 729080), (40, 528583), (44, 480530), (55, 384424), (58, 364540), (88, 240265), (110, 192212), (116, 182270), (145, 145816), (220, 96106), (232, 91135), (290, 72908), (319, 66280), (440, 48053), (580, 36454), (638, 33140), (1160, 18227), (1276, 16570), (1595, 13256), (1657, 12760), (2552, 8285), (3190, 6628), (3314, 6380)]