21000391760

素因数分解:

$2^4\times 5^1\times {\mathrm{29}}^1\times {\mathrm{193}}^1\times {\mathrm{46901}}^1$

素因数の和:47136

約数の個数: 80

約数和(自身を含む): 50772353040

約数和(自身を除く): 29771961280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 40, 58, 80, 116, 145, 193, 232, 290, 386, 464, 580, 772, 965, 1160, 1544, 1930, 2320, 3088, 3860, 5597, 7720, 11194, 15440, 22388, 27985, 44776, 46901, 55970, 89552, 93802, 111940, 187604, 223880, 234505, 375208, 447760, 469010, 750416, 938020, 1360129, 1876040, 2720258, 3752080, 5440516, 6800645, 9051893, 10881032, 13601290, 18103786, 21762064, 27202580, 36207572, 45259465, 54405160, 72415144, 90518930, 108810320, 144830288, 181037860, 262504897, 362075720, 525009794, 724151440, 1050019588, 1312524485, 2100039176, 2625048970, 4200078352, 5250097940, 10500195880, 21000391760]

約数ペア:

[(1, 21000391760), (2, 10500195880), (4, 5250097940), (5, 4200078352), (8, 2625048970), (10, 2100039176), (16, 1312524485), (20, 1050019588), (29, 724151440), (40, 525009794), (58, 362075720), (80, 262504897), (116, 181037860), (145, 144830288), (193, 108810320), (232, 90518930), (290, 72415144), (386, 54405160), (464, 45259465), (580, 36207572), (772, 27202580), (965, 21762064), (1160, 18103786), (1544, 13601290), (1930, 10881032), (2320, 9051893), (3088, 6800645), (3860, 5440516), (5597, 3752080), (7720, 2720258), (11194, 1876040), (15440, 1360129), (22388, 938020), (27985, 750416), (44776, 469010), (46901, 447760), (55970, 375208), (89552, 234505), (93802, 223880), (111940, 187604)]