21259620

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{83}}^1\times {\mathrm{1423}}^1$

素因数の和:1521

約数の個数: 72

約数和(自身を含む): 65310336

約数和(自身を除く): 44050716

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 83, 90, 166, 180, 249, 332, 415, 498, 747, 830, 996, 1245, 1423, 1494, 1660, 2490, 2846, 2988, 3735, 4269, 4980, 5692, 7115, 7470, 8538, 12807, 14230, 14940, 17076, 21345, 25614, 28460, 42690, 51228, 64035, 85380, 118109, 128070, 236218, 256140, 354327, 472436, 590545, 708654, 1062981, 1181090, 1417308, 1771635, 2125962, 2362180, 3543270, 4251924, 5314905, 7086540, 10629810, 21259620]

約数ペア:

[(1, 21259620), (2, 10629810), (3, 7086540), (4, 5314905), (5, 4251924), (6, 3543270), (9, 2362180), (10, 2125962), (12, 1771635), (15, 1417308), (18, 1181090), (20, 1062981), (30, 708654), (36, 590545), (45, 472436), (60, 354327), (83, 256140), (90, 236218), (166, 128070), (180, 118109), (249, 85380), (332, 64035), (415, 51228), (498, 42690), (747, 28460), (830, 25614), (996, 21345), (1245, 17076), (1423, 14940), (1494, 14230), (1660, 12807), (2490, 8538), (2846, 7470), (2988, 7115), (3735, 5692), (4269, 4980)]