28437680

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{353}}^1$

素因数の和:438

約数の個数: 80

約数和(自身を含む): 71111520

約数和(自身を除く): 42673840

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 53, 76, 80, 95, 106, 152, 190, 212, 265, 304, 353, 380, 424, 530, 706, 760, 848, 1007, 1060, 1412, 1520, 1765, 2014, 2120, 2824, 3530, 4028, 4240, 5035, 5648, 6707, 7060, 8056, 10070, 13414, 14120, 16112, 18709, 20140, 26828, 28240, 33535, 37418, 40280, 53656, 67070, 74836, 80560, 93545, 107312, 134140, 149672, 187090, 268280, 299344, 355471, 374180, 536560, 710942, 748360, 1421884, 1496720, 1777355, 2843768, 3554710, 5687536, 7109420, 14218840, 28437680]

約数ペア:

[(1, 28437680), (2, 14218840), (4, 7109420), (5, 5687536), (8, 3554710), (10, 2843768), (16, 1777355), (19, 1496720), (20, 1421884), (38, 748360), (40, 710942), (53, 536560), (76, 374180), (80, 355471), (95, 299344), (106, 268280), (152, 187090), (190, 149672), (212, 134140), (265, 107312), (304, 93545), (353, 80560), (380, 74836), (424, 67070), (530, 53656), (706, 40280), (760, 37418), (848, 33535), (1007, 28240), (1060, 26828), (1412, 20140), (1520, 18709), (1765, 16112), (2014, 14120), (2120, 13414), (2824, 10070), (3530, 8056), (4028, 7060), (4240, 6707), (5035, 5648)]