21415020

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{457}}^1$

素因数の和:551

約数の個数: 96

約数和(自身を含む): 66479616

約数和(自身を除く): 45064596

約数列:

[1, 2, 3, 4, 5, 6, 10, 11, 12, 15, 20, 22, 30, 33, 44, 55, 60, 66, 71, 110, 132, 142, 165, 213, 220, 284, 330, 355, 426, 457, 660, 710, 781, 852, 914, 1065, 1371, 1420, 1562, 1828, 2130, 2285, 2343, 2742, 3124, 3905, 4260, 4570, 4686, 5027, 5484, 6855, 7810, 9140, 9372, 10054, 11715, 13710, 15081, 15620, 20108, 23430, 25135, 27420, 30162, 32447, 46860, 50270, 60324, 64894, 75405, 97341, 100540, 129788, 150810, 162235, 194682, 301620, 324470, 356917, 389364, 486705, 648940, 713834, 973410, 1070751, 1427668, 1784585, 1946820, 2141502, 3569170, 4283004, 5353755, 7138340, 10707510, 21415020]

約数ペア:

[(1, 21415020), (2, 10707510), (3, 7138340), (4, 5353755), (5, 4283004), (6, 3569170), (10, 2141502), (11, 1946820), (12, 1784585), (15, 1427668), (20, 1070751), (22, 973410), (30, 713834), (33, 648940), (44, 486705), (55, 389364), (60, 356917), (66, 324470), (71, 301620), (110, 194682), (132, 162235), (142, 150810), (165, 129788), (213, 100540), (220, 97341), (284, 75405), (330, 64894), (355, 60324), (426, 50270), (457, 46860), (660, 32447), (710, 30162), (781, 27420), (852, 25135), (914, 23430), (1065, 20108), (1371, 15620), (1420, 15081), (1562, 13710), (1828, 11715), (2130, 10054), (2285, 9372), (2343, 9140), (2742, 7810), (3124, 6855), (3905, 5484), (4260, 5027), (4570, 4686)]