21885780

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{107}}^1\times {\mathrm{487}}^1$

素因数の和:613

約数の個数: 96

約数和(自身を含む): 70834176

約数和(自身を除く): 48948396

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 107, 140, 210, 214, 321, 420, 428, 487, 535, 642, 749, 974, 1070, 1284, 1461, 1498, 1605, 1948, 2140, 2247, 2435, 2922, 2996, 3210, 3409, 3745, 4494, 4870, 5844, 6420, 6818, 7305, 7490, 8988, 9740, 10227, 11235, 13636, 14610, 14980, 17045, 20454, 22470, 29220, 34090, 40908, 44940, 51135, 52109, 68180, 102270, 104218, 156327, 204540, 208436, 260545, 312654, 364763, 521090, 625308, 729526, 781635, 1042180, 1094289, 1459052, 1563270, 1823815, 2188578, 3126540, 3647630, 4377156, 5471445, 7295260, 10942890, 21885780]

約数ペア:

[(1, 21885780), (2, 10942890), (3, 7295260), (4, 5471445), (5, 4377156), (6, 3647630), (7, 3126540), (10, 2188578), (12, 1823815), (14, 1563270), (15, 1459052), (20, 1094289), (21, 1042180), (28, 781635), (30, 729526), (35, 625308), (42, 521090), (60, 364763), (70, 312654), (84, 260545), (105, 208436), (107, 204540), (140, 156327), (210, 104218), (214, 102270), (321, 68180), (420, 52109), (428, 51135), (487, 44940), (535, 40908), (642, 34090), (749, 29220), (974, 22470), (1070, 20454), (1284, 17045), (1461, 14980), (1498, 14610), (1605, 13636), (1948, 11235), (2140, 10227), (2247, 9740), (2435, 8988), (2922, 7490), (2996, 7305), (3210, 6818), (3409, 6420), (3745, 5844), (4494, 4870)]