21206360

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{1429}}^1$

素因数の和:1500

約数の個数: 64

約数和(自身を含む): 55598400

約数和(自身を除く): 34392040

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 53, 56, 70, 106, 140, 212, 265, 280, 371, 424, 530, 742, 1060, 1429, 1484, 1855, 2120, 2858, 2968, 3710, 5716, 7145, 7420, 10003, 11432, 14290, 14840, 20006, 28580, 40012, 50015, 57160, 75737, 80024, 100030, 151474, 200060, 302948, 378685, 400120, 530159, 605896, 757370, 1060318, 1514740, 2120636, 2650795, 3029480, 4241272, 5301590, 10603180, 21206360]

約数ペア:

[(1, 21206360), (2, 10603180), (4, 5301590), (5, 4241272), (7, 3029480), (8, 2650795), (10, 2120636), (14, 1514740), (20, 1060318), (28, 757370), (35, 605896), (40, 530159), (53, 400120), (56, 378685), (70, 302948), (106, 200060), (140, 151474), (212, 100030), (265, 80024), (280, 75737), (371, 57160), (424, 50015), (530, 40012), (742, 28580), (1060, 20006), (1429, 14840), (1484, 14290), (1855, 11432), (2120, 10003), (2858, 7420), (2968, 7145), (3710, 5716)]