18380040

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{21881}}^1$

素因数の和:21902

約数の個数: 64

約数和(自身を含む): 63020160

約数和(自身を除く): 44640120

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, 21881, 43762, 65643, 87524, 109405, 131286, 153167, 175048, 218810, 262572, 306334, 328215, 437620, 459501, 525144, 612668, 656430, 765835, 875240, 919002, 1225336, 1312860, 1531670, 1838004, 2297505, 2625720, 3063340, 3676008, 4595010, 6126680, 9190020, 18380040]

約数ペア:

[(1, 18380040), (2, 9190020), (3, 6126680), (4, 4595010), (5, 3676008), (6, 3063340), (7, 2625720), (8, 2297505), (10, 1838004), (12, 1531670), (14, 1312860), (15, 1225336), (20, 919002), (21, 875240), (24, 765835), (28, 656430), (30, 612668), (35, 525144), (40, 459501), (42, 437620), (56, 328215), (60, 306334), (70, 262572), (84, 218810), (105, 175048), (120, 153167), (140, 131286), (168, 109405), (210, 87524), (280, 65643), (420, 43762), (840, 21881)]