21411810

素因数分解:

$2^1\times 3^3\times 5^1\times 7^1\times {\mathrm{11329}}^1$

素因数の和:11352

約数の個数: 64

約数和(自身を含む): 65260800

約数和(自身を除く): 43848990

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 27, 30, 35, 42, 45, 54, 63, 70, 90, 105, 126, 135, 189, 210, 270, 315, 378, 630, 945, 1890, 11329, 22658, 33987, 56645, 67974, 79303, 101961, 113290, 158606, 169935, 203922, 237909, 305883, 339870, 396515, 475818, 509805, 611766, 713727, 793030, 1019610, 1189545, 1427454, 1529415, 2141181, 2379090, 3058830, 3568635, 4282362, 7137270, 10705905, 21411810]

約数ペア:

[(1, 21411810), (2, 10705905), (3, 7137270), (5, 4282362), (6, 3568635), (7, 3058830), (9, 2379090), (10, 2141181), (14, 1529415), (15, 1427454), (18, 1189545), (21, 1019610), (27, 793030), (30, 713727), (35, 611766), (42, 509805), (45, 475818), (54, 396515), (63, 339870), (70, 305883), (90, 237909), (105, 203922), (126, 169935), (135, 158606), (189, 113290), (210, 101961), (270, 79303), (315, 67974), (378, 56645), (630, 33987), (945, 22658), (1890, 11329)]