216687520

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{79}}^2$

素因数の和:211

約数の個数: 144

約数和(自身を含む): 611670528

約数和(自身を除く): 394983008

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 31, 32, 35, 40, 56, 62, 70, 79, 80, 112, 124, 140, 155, 158, 160, 217, 224, 248, 280, 310, 316, 395, 434, 496, 553, 560, 620, 632, 790, 868, 992, 1085, 1106, 1120, 1240, 1264, 1580, 1736, 2170, 2212, 2449, 2480, 2528, 2765, 3160, 3472, 4340, 4424, 4898, 4960, 5530, 6241, 6320, 6944, 8680, 8848, 9796, 11060, 12245, 12482, 12640, 17143, 17360, 17696, 19592, 22120, 24490, 24964, 31205, 34286, 34720, 39184, 43687, 44240, 48980, 49928, 62410, 68572, 78368, 85715, 87374, 88480, 97960, 99856, 124820, 137144, 171430, 174748, 193471, 195920, 199712, 218435, 249640, 274288, 342860, 349496, 386942, 391840, 436870, 499280, 548576, 685720, 698992, 773884, 873740, 967355, 998560, 1354297, 1371440, 1397984, 1547768, 1747480, 1934710, 2708594, 2742880, 3095536, 3494960, 3869420, 5417188, 6191072, 6771485, 6989920, 7738840, 10834376, 13542970, 15477680, 21668752, 27085940, 30955360, 43337504, 54171880, 108343760, 216687520]

約数ペア:

[(1, 216687520), (2, 108343760), (4, 54171880), (5, 43337504), (7, 30955360), (8, 27085940), (10, 21668752), (14, 15477680), (16, 13542970), (20, 10834376), (28, 7738840), (31, 6989920), (32, 6771485), (35, 6191072), (40, 5417188), (56, 3869420), (62, 3494960), (70, 3095536), (79, 2742880), (80, 2708594), (112, 1934710), (124, 1747480), (140, 1547768), (155, 1397984), (158, 1371440), (160, 1354297), (217, 998560), (224, 967355), (248, 873740), (280, 773884), (310, 698992), (316, 685720), (395, 548576), (434, 499280), (496, 436870), (553, 391840), (560, 386942), (620, 349496), (632, 342860), (790, 274288), (868, 249640), (992, 218435), (1085, 199712), (1106, 195920), (1120, 193471), (1240, 174748), (1264, 171430), (1580, 137144), (1736, 124820), (2170, 99856), (2212, 97960), (2449, 88480), (2480, 87374), (2528, 85715), (2765, 78368), (3160, 68572), (3472, 62410), (4340, 49928), (4424, 48980), (4898, 44240), (4960, 43687), (5530, 39184), (6241, 34720), (6320, 34286), (6944, 31205), (8680, 24964), (8848, 24490), (9796, 22120), (11060, 19592), (12245, 17696), (12482, 17360), (12640, 17143)]