21500360

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{2477}}^1$

素因数の和:2526

約数の個数: 64

約数和(自身を含む): 57093120

約数和(自身を除く): 35592760

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 31, 35, 40, 56, 62, 70, 124, 140, 155, 217, 248, 280, 310, 434, 620, 868, 1085, 1240, 1736, 2170, 2477, 4340, 4954, 8680, 9908, 12385, 17339, 19816, 24770, 34678, 49540, 69356, 76787, 86695, 99080, 138712, 153574, 173390, 307148, 346780, 383935, 537509, 614296, 693560, 767870, 1075018, 1535740, 2150036, 2687545, 3071480, 4300072, 5375090, 10750180, 21500360]

約数ペア:

[(1, 21500360), (2, 10750180), (4, 5375090), (5, 4300072), (7, 3071480), (8, 2687545), (10, 2150036), (14, 1535740), (20, 1075018), (28, 767870), (31, 693560), (35, 614296), (40, 537509), (56, 383935), (62, 346780), (70, 307148), (124, 173390), (140, 153574), (155, 138712), (217, 99080), (248, 86695), (280, 76787), (310, 69356), (434, 49540), (620, 34678), (868, 24770), (1085, 19816), (1240, 17339), (1736, 12385), (2170, 9908), (2477, 8680), (4340, 4954)]