28164920

素因数分解:

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

素因数の和:193

約数の個数: 128

約数和(自身を含む): 78744960

約数和(自身を除く): 50580040

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 17, 20, 28, 34, 35, 40, 56, 61, 68, 70, 85, 97, 119, 122, 136, 140, 170, 194, 238, 244, 280, 305, 340, 388, 427, 476, 485, 488, 595, 610, 679, 680, 776, 854, 952, 970, 1037, 1190, 1220, 1358, 1649, 1708, 1940, 2074, 2135, 2380, 2440, 2716, 3298, 3395, 3416, 3880, 4148, 4270, 4760, 5185, 5432, 5917, 6596, 6790, 7259, 8245, 8296, 8540, 10370, 11543, 11834, 13192, 13580, 14518, 16490, 17080, 20740, 23086, 23668, 27160, 29036, 29585, 32980, 36295, 41419, 41480, 46172, 47336, 57715, 58072, 59170, 65960, 72590, 82838, 92344, 100589, 115430, 118340, 145180, 165676, 201178, 207095, 230860, 236680, 290360, 331352, 402356, 414190, 461720, 502945, 704123, 804712, 828380, 1005890, 1408246, 1656760, 2011780, 2816492, 3520615, 4023560, 5632984, 7041230, 14082460, 28164920]

約数ペア:

[(1, 28164920), (2, 14082460), (4, 7041230), (5, 5632984), (7, 4023560), (8, 3520615), (10, 2816492), (14, 2011780), (17, 1656760), (20, 1408246), (28, 1005890), (34, 828380), (35, 804712), (40, 704123), (56, 502945), (61, 461720), (68, 414190), (70, 402356), (85, 331352), (97, 290360), (119, 236680), (122, 230860), (136, 207095), (140, 201178), (170, 165676), (194, 145180), (238, 118340), (244, 115430), (280, 100589), (305, 92344), (340, 82838), (388, 72590), (427, 65960), (476, 59170), (485, 58072), (488, 57715), (595, 47336), (610, 46172), (679, 41480), (680, 41419), (776, 36295), (854, 32980), (952, 29585), (970, 29036), (1037, 27160), (1190, 23668), (1220, 23086), (1358, 20740), (1649, 17080), (1708, 16490), (1940, 14518), (2074, 13580), (2135, 13192), (2380, 11834), (2440, 11543), (2716, 10370), (3298, 8540), (3395, 8296), (3416, 8245), (3880, 7259), (4148, 6790), (4270, 6596), (4760, 5917), (5185, 5432)]