21056280

素因数分解:

$2^3\times 3^1\times 5^1\times 7^2\times {\mathrm{3581}}^1$

素因数の和:3609

約数の個数: 96

約数和(自身を含む): 73502640

約数和(自身を除く): 52446360

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 49, 56, 60, 70, 84, 98, 105, 120, 140, 147, 168, 196, 210, 245, 280, 294, 392, 420, 490, 588, 735, 840, 980, 1176, 1470, 1960, 2940, 3581, 5880, 7162, 10743, 14324, 17905, 21486, 25067, 28648, 35810, 42972, 50134, 53715, 71620, 75201, 85944, 100268, 107430, 125335, 143240, 150402, 175469, 200536, 214860, 250670, 300804, 350938, 376005, 429720, 501340, 526407, 601608, 701876, 752010, 877345, 1002680, 1052814, 1403752, 1504020, 1754690, 2105628, 2632035, 3008040, 3509380, 4211256, 5264070, 7018760, 10528140, 21056280]

約数ペア:

[(1, 21056280), (2, 10528140), (3, 7018760), (4, 5264070), (5, 4211256), (6, 3509380), (7, 3008040), (8, 2632035), (10, 2105628), (12, 1754690), (14, 1504020), (15, 1403752), (20, 1052814), (21, 1002680), (24, 877345), (28, 752010), (30, 701876), (35, 601608), (40, 526407), (42, 501340), (49, 429720), (56, 376005), (60, 350938), (70, 300804), (84, 250670), (98, 214860), (105, 200536), (120, 175469), (140, 150402), (147, 143240), (168, 125335), (196, 107430), (210, 100268), (245, 85944), (280, 75201), (294, 71620), (392, 53715), (420, 50134), (490, 42972), (588, 35810), (735, 28648), (840, 25067), (980, 21486), (1176, 17905), (1470, 14324), (1960, 10743), (2940, 7162), (3581, 5880)]