20816040

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{24781}}^1$

素因数の和:24802

約数の個数: 64

約数和(自身を含む): 71372160

約数和(自身を除く): 50556120

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, 24781, 49562, 74343, 99124, 123905, 148686, 173467, 198248, 247810, 297372, 346934, 371715, 495620, 520401, 594744, 693868, 743430, 867335, 991240, 1040802, 1387736, 1486860, 1734670, 2081604, 2602005, 2973720, 3469340, 4163208, 5204010, 6938680, 10408020, 20816040]

約数ペア:

[(1, 20816040), (2, 10408020), (3, 6938680), (4, 5204010), (5, 4163208), (6, 3469340), (7, 2973720), (8, 2602005), (10, 2081604), (12, 1734670), (14, 1486860), (15, 1387736), (20, 1040802), (21, 991240), (24, 867335), (28, 743430), (30, 693868), (35, 594744), (40, 520401), (42, 495620), (56, 371715), (60, 346934), (70, 297372), (84, 247810), (105, 198248), (120, 173467), (140, 148686), (168, 123905), (210, 99124), (280, 74343), (420, 49562), (840, 24781)]