20952120

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{24943}}^1$

素因数の和:24964

約数の個数: 64

約数和(自身を含む): 71838720

約数和(自身を除く): 50886600

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840, 24943, 49886, 74829, 99772, 124715, 149658, 174601, 199544, 249430, 299316, 349202, 374145, 498860, 523803, 598632, 698404, 748290, 873005, 997720, 1047606, 1396808, 1496580, 1746010, 2095212, 2619015, 2993160, 3492020, 4190424, 5238030, 6984040, 10476060, 20952120]

約数ペア:

[(1, 20952120), (2, 10476060), (3, 6984040), (4, 5238030), (5, 4190424), (6, 3492020), (7, 2993160), (8, 2619015), (10, 2095212), (12, 1746010), (14, 1496580), (15, 1396808), (20, 1047606), (21, 997720), (24, 873005), (28, 748290), (30, 698404), (35, 598632), (40, 523803), (42, 498860), (56, 374145), (60, 349202), (70, 299316), (84, 249430), (105, 199544), (120, 174601), (140, 149658), (168, 124715), (210, 99772), (280, 74829), (420, 49886), (840, 24943)]