21881580

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{983}}^1$

素因数の和:1055

約数の個数: 96

約数和(自身を含む): 71414784

約数和(自身を除く): 49533204

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 53, 60, 70, 84, 105, 106, 140, 159, 210, 212, 265, 318, 371, 420, 530, 636, 742, 795, 983, 1060, 1113, 1484, 1590, 1855, 1966, 2226, 2949, 3180, 3710, 3932, 4452, 4915, 5565, 5898, 6881, 7420, 9830, 11130, 11796, 13762, 14745, 19660, 20643, 22260, 27524, 29490, 34405, 41286, 52099, 58980, 68810, 82572, 103215, 104198, 137620, 156297, 206430, 208396, 260495, 312594, 364693, 412860, 520990, 625188, 729386, 781485, 1041980, 1094079, 1458772, 1562970, 1823465, 2188158, 3125940, 3646930, 4376316, 5470395, 7293860, 10940790, 21881580]

約数ペア:

[(1, 21881580), (2, 10940790), (3, 7293860), (4, 5470395), (5, 4376316), (6, 3646930), (7, 3125940), (10, 2188158), (12, 1823465), (14, 1562970), (15, 1458772), (20, 1094079), (21, 1041980), (28, 781485), (30, 729386), (35, 625188), (42, 520990), (53, 412860), (60, 364693), (70, 312594), (84, 260495), (105, 208396), (106, 206430), (140, 156297), (159, 137620), (210, 104198), (212, 103215), (265, 82572), (318, 68810), (371, 58980), (420, 52099), (530, 41286), (636, 34405), (742, 29490), (795, 27524), (983, 22260), (1060, 20643), (1113, 19660), (1484, 14745), (1590, 13762), (1855, 11796), (1966, 11130), (2226, 9830), (2949, 7420), (3180, 6881), (3710, 5898), (3932, 5565), (4452, 4915)]