16721320

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{89}}^1$

素因数の和:179

約数の個数: 128

約数和(自身を含む): 48211200

約数和(自身を除く): 31489880

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 20, 22, 28, 35, 40, 44, 55, 56, 61, 70, 77, 88, 89, 110, 122, 140, 154, 178, 220, 244, 280, 305, 308, 356, 385, 427, 440, 445, 488, 610, 616, 623, 671, 712, 770, 854, 890, 979, 1220, 1246, 1342, 1540, 1708, 1780, 1958, 2135, 2440, 2492, 2684, 3080, 3115, 3355, 3416, 3560, 3916, 4270, 4697, 4895, 4984, 5368, 5429, 6230, 6710, 6853, 7832, 8540, 9394, 9790, 10858, 12460, 13420, 13706, 17080, 18788, 19580, 21716, 23485, 24920, 26840, 27145, 27412, 34265, 37576, 38003, 39160, 43432, 46970, 54290, 54824, 59719, 68530, 76006, 93940, 108580, 119438, 137060, 152012, 187880, 190015, 217160, 238876, 274120, 298595, 304024, 380030, 418033, 477752, 597190, 760060, 836066, 1194380, 1520120, 1672132, 2090165, 2388760, 3344264, 4180330, 8360660, 16721320]

約数ペア:

[(1, 16721320), (2, 8360660), (4, 4180330), (5, 3344264), (7, 2388760), (8, 2090165), (10, 1672132), (11, 1520120), (14, 1194380), (20, 836066), (22, 760060), (28, 597190), (35, 477752), (40, 418033), (44, 380030), (55, 304024), (56, 298595), (61, 274120), (70, 238876), (77, 217160), (88, 190015), (89, 187880), (110, 152012), (122, 137060), (140, 119438), (154, 108580), (178, 93940), (220, 76006), (244, 68530), (280, 59719), (305, 54824), (308, 54290), (356, 46970), (385, 43432), (427, 39160), (440, 38003), (445, 37576), (488, 34265), (610, 27412), (616, 27145), (623, 26840), (671, 24920), (712, 23485), (770, 21716), (854, 19580), (890, 18788), (979, 17080), (1220, 13706), (1246, 13420), (1342, 12460), (1540, 10858), (1708, 9790), (1780, 9394), (1958, 8540), (2135, 7832), (2440, 6853), (2492, 6710), (2684, 6230), (3080, 5429), (3115, 5368), (3355, 4984), (3416, 4895), (3560, 4697), (3916, 4270)]