21420504

素因数分解:

$2^3\times 3^3\times 7^1\times {\mathrm{31}}^1\times {\mathrm{457}}^1$

素因数の和:510

約数の個数: 128

約数和(自身を含む): 70348800

約数和(自身を除く): 48928296

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 18, 21, 24, 27, 28, 31, 36, 42, 54, 56, 62, 63, 72, 84, 93, 108, 124, 126, 168, 186, 189, 216, 217, 248, 252, 279, 372, 378, 434, 457, 504, 558, 651, 744, 756, 837, 868, 914, 1116, 1302, 1371, 1512, 1674, 1736, 1828, 1953, 2232, 2604, 2742, 3199, 3348, 3656, 3906, 4113, 5208, 5484, 5859, 6398, 6696, 7812, 8226, 9597, 10968, 11718, 12339, 12796, 14167, 15624, 16452, 19194, 23436, 24678, 25592, 28334, 28791, 32904, 38388, 42501, 46872, 49356, 56668, 57582, 76776, 85002, 86373, 98712, 99169, 113336, 115164, 127503, 170004, 172746, 198338, 230328, 255006, 297507, 340008, 345492, 382509, 396676, 510012, 595014, 690984, 765018, 793352, 892521, 1020024, 1190028, 1530036, 1785042, 2380056, 2677563, 3060072, 3570084, 5355126, 7140168, 10710252, 21420504]

約数ペア:

[(1, 21420504), (2, 10710252), (3, 7140168), (4, 5355126), (6, 3570084), (7, 3060072), (8, 2677563), (9, 2380056), (12, 1785042), (14, 1530036), (18, 1190028), (21, 1020024), (24, 892521), (27, 793352), (28, 765018), (31, 690984), (36, 595014), (42, 510012), (54, 396676), (56, 382509), (62, 345492), (63, 340008), (72, 297507), (84, 255006), (93, 230328), (108, 198338), (124, 172746), (126, 170004), (168, 127503), (186, 115164), (189, 113336), (216, 99169), (217, 98712), (248, 86373), (252, 85002), (279, 76776), (372, 57582), (378, 56668), (434, 49356), (457, 46872), (504, 42501), (558, 38388), (651, 32904), (744, 28791), (756, 28334), (837, 25592), (868, 24678), (914, 23436), (1116, 19194), (1302, 16452), (1371, 15624), (1512, 14167), (1674, 12796), (1736, 12339), (1828, 11718), (1953, 10968), (2232, 9597), (2604, 8226), (2742, 7812), (3199, 6696), (3348, 6398), (3656, 5859), (3906, 5484), (4113, 5208)]