28442960

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{3907}}^1$

素因数の和:3940

約数の個数: 80

約数和(自身を含む): 81411456

約数和(自身を除く): 52968496

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 35, 40, 52, 56, 65, 70, 80, 91, 104, 112, 130, 140, 182, 208, 260, 280, 364, 455, 520, 560, 728, 910, 1040, 1456, 1820, 3640, 3907, 7280, 7814, 15628, 19535, 27349, 31256, 39070, 50791, 54698, 62512, 78140, 101582, 109396, 136745, 156280, 203164, 218792, 253955, 273490, 312560, 355537, 406328, 437584, 507910, 546980, 711074, 812656, 1015820, 1093960, 1422148, 1777685, 2031640, 2187920, 2844296, 3555370, 4063280, 5688592, 7110740, 14221480, 28442960]

約数ペア:

[(1, 28442960), (2, 14221480), (4, 7110740), (5, 5688592), (7, 4063280), (8, 3555370), (10, 2844296), (13, 2187920), (14, 2031640), (16, 1777685), (20, 1422148), (26, 1093960), (28, 1015820), (35, 812656), (40, 711074), (52, 546980), (56, 507910), (65, 437584), (70, 406328), (80, 355537), (91, 312560), (104, 273490), (112, 253955), (130, 218792), (140, 203164), (182, 156280), (208, 136745), (260, 109396), (280, 101582), (364, 78140), (455, 62512), (520, 54698), (560, 50791), (728, 39070), (910, 31256), (1040, 27349), (1456, 19535), (1820, 15628), (3640, 7814), (3907, 7280)]