21268485

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{251}}^1\times {\mathrm{269}}^1$

素因数の和:538

約数の個数: 48

約数和(自身を含む): 42456960

約数和(自身を除く): 21188475

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 251, 269, 315, 753, 807, 1255, 1345, 1757, 1883, 2259, 2421, 3765, 4035, 5271, 5649, 8785, 9415, 11295, 12105, 15813, 16947, 26355, 28245, 67519, 79065, 84735, 202557, 337595, 472633, 607671, 1012785, 1417899, 2363165, 3038355, 4253697, 7089495, 21268485]

約数ペア:

[(1, 21268485), (3, 7089495), (5, 4253697), (7, 3038355), (9, 2363165), (15, 1417899), (21, 1012785), (35, 607671), (45, 472633), (63, 337595), (105, 202557), (251, 84735), (269, 79065), (315, 67519), (753, 28245), (807, 26355), (1255, 16947), (1345, 15813), (1757, 12105), (1883, 11295), (2259, 9415), (2421, 8785), (3765, 5649), (4035, 5271)]