21306390

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{1429}}^1$

素因数の和:1517

約数の個数: 64

約数和(自身を含む): 59304960

約数和(自身を除く): 37998570

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 71, 105, 142, 210, 213, 355, 426, 497, 710, 994, 1065, 1429, 1491, 2130, 2485, 2858, 2982, 4287, 4970, 7145, 7455, 8574, 10003, 14290, 14910, 20006, 21435, 30009, 42870, 50015, 60018, 100030, 101459, 150045, 202918, 300090, 304377, 507295, 608754, 710213, 1014590, 1420426, 1521885, 2130639, 3043770, 3551065, 4261278, 7102130, 10653195, 21306390]

約数ペア:

[(1, 21306390), (2, 10653195), (3, 7102130), (5, 4261278), (6, 3551065), (7, 3043770), (10, 2130639), (14, 1521885), (15, 1420426), (21, 1014590), (30, 710213), (35, 608754), (42, 507295), (70, 304377), (71, 300090), (105, 202918), (142, 150045), (210, 101459), (213, 100030), (355, 60018), (426, 50015), (497, 42870), (710, 30009), (994, 21435), (1065, 20006), (1429, 14910), (1491, 14290), (2130, 10003), (2485, 8574), (2858, 7455), (2982, 7145), (4287, 4970)]