21123690

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{97}}^1$

素因数の和:192

約数の個数: 128

約数和(自身を含む): 62995968

約数和(自身を除く): 41872278

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 17, 21, 30, 34, 35, 42, 51, 61, 70, 85, 97, 102, 105, 119, 122, 170, 183, 194, 210, 238, 255, 291, 305, 357, 366, 427, 485, 510, 582, 595, 610, 679, 714, 854, 915, 970, 1037, 1190, 1281, 1358, 1455, 1649, 1785, 1830, 2037, 2074, 2135, 2562, 2910, 3111, 3298, 3395, 3570, 4074, 4270, 4947, 5185, 5917, 6222, 6405, 6790, 7259, 8245, 9894, 10185, 10370, 11543, 11834, 12810, 14518, 15555, 16490, 17751, 20370, 21777, 23086, 24735, 29585, 31110, 34629, 35502, 36295, 41419, 43554, 49470, 57715, 59170, 69258, 72590, 82838, 88755, 100589, 108885, 115430, 124257, 173145, 177510, 201178, 207095, 217770, 248514, 301767, 346290, 414190, 502945, 603534, 621285, 704123, 1005890, 1242570, 1408246, 1508835, 2112369, 3017670, 3520615, 4224738, 7041230, 10561845, 21123690]

約数ペア:

[(1, 21123690), (2, 10561845), (3, 7041230), (5, 4224738), (6, 3520615), (7, 3017670), (10, 2112369), (14, 1508835), (15, 1408246), (17, 1242570), (21, 1005890), (30, 704123), (34, 621285), (35, 603534), (42, 502945), (51, 414190), (61, 346290), (70, 301767), (85, 248514), (97, 217770), (102, 207095), (105, 201178), (119, 177510), (122, 173145), (170, 124257), (183, 115430), (194, 108885), (210, 100589), (238, 88755), (255, 82838), (291, 72590), (305, 69258), (357, 59170), (366, 57715), (427, 49470), (485, 43554), (510, 41419), (582, 36295), (595, 35502), (610, 34629), (679, 31110), (714, 29585), (854, 24735), (915, 23086), (970, 21777), (1037, 20370), (1190, 17751), (1281, 16490), (1358, 15555), (1455, 14518), (1649, 12810), (1785, 11834), (1830, 11543), (2037, 10370), (2074, 10185), (2135, 9894), (2562, 8245), (2910, 7259), (3111, 6790), (3298, 6405), (3395, 6222), (3570, 5917), (4074, 5185), (4270, 4947)]