21421018.000000000

素因数分解:

$2^4\times 3^1\times {\mathrm{19}}^1\times {\mathrm{281}}^1\times {\mathrm{433}}^1$

素因数の和:744

約数の個数: 80

約数和(自身を含む): 303522240

約数和(自身を除く): 192556464

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 19, 24, 38, 48, 57, 76, 114, 152, 228, 281, 304, 433, 456, 562, 843, 866, 912, 1124, 1299, 1686, 1732, 2248, 2598, 3372, 3464, 4496, 5196, 5339, 6744, 6928, 8227, 10392, 10678, 13488, 16017, 16454, 20784, 21356, 24681, 32034, 32908, 42712, 49362, 64068, 65816, 85424, 98724, 121673, 128136, 131632, 197448, 243346, 256272, 365019, 394896, 486692, 730038, 973384, 1460076, 1946768, 2311787, 2920152, 4623574, 5840304, 6935361, 9247148, 13870722, 18494296, 27741444, 36988592, 55482888, 110965776]

約数ペア:

[(1, 110965776), (2, 55482888), (3, 36988592), (4, 27741444), (6, 18494296), (8, 13870722), (12, 9247148), (16, 6935361), (19, 5840304), (24, 4623574), (38, 2920152), (48, 2311787), (57, 1946768), (76, 1460076), (114, 973384), (152, 730038), (228, 486692), (281, 394896), (304, 365019), (433, 256272), (456, 243346), (562, 197448), (843, 131632), (866, 128136), (912, 121673), (1124, 98724), (1299, 85424), (1686, 65816), (1732, 64068), (2248, 49362), (2598, 42712), (3372, 32908), (3464, 32034), (4496, 24681), (5196, 21356), (5339, 20784), (6744, 16454), (6928, 16017), (8227, 13488), (10392, 10678)]