21595420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{379}}^1$

素因数の和:443

約数の個数: 96

約数和(自身を含む): 58222080

約数和(自身を除く): 36626660

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 37, 44, 55, 70, 74, 77, 110, 140, 148, 154, 185, 220, 259, 308, 370, 379, 385, 407, 518, 740, 758, 770, 814, 1036, 1295, 1516, 1540, 1628, 1895, 2035, 2590, 2653, 2849, 3790, 4070, 4169, 5180, 5306, 5698, 7580, 8140, 8338, 10612, 11396, 13265, 14023, 14245, 16676, 20845, 26530, 28046, 28490, 29183, 41690, 53060, 56092, 56980, 58366, 70115, 83380, 98161, 116732, 140230, 145915, 154253, 196322, 280460, 291830, 308506, 392644, 490805, 583660, 617012, 771265, 981610, 1079771, 1542530, 1963220, 2159542, 3085060, 4319084, 5398855, 10797710, 21595420]

約数ペア:

[(1, 21595420), (2, 10797710), (4, 5398855), (5, 4319084), (7, 3085060), (10, 2159542), (11, 1963220), (14, 1542530), (20, 1079771), (22, 981610), (28, 771265), (35, 617012), (37, 583660), (44, 490805), (55, 392644), (70, 308506), (74, 291830), (77, 280460), (110, 196322), (140, 154253), (148, 145915), (154, 140230), (185, 116732), (220, 98161), (259, 83380), (308, 70115), (370, 58366), (379, 56980), (385, 56092), (407, 53060), (518, 41690), (740, 29183), (758, 28490), (770, 28046), (814, 26530), (1036, 20845), (1295, 16676), (1516, 14245), (1540, 14023), (1628, 13265), (1895, 11396), (2035, 10612), (2590, 8338), (2653, 8140), (2849, 7580), (3790, 5698), (4070, 5306), (4169, 5180)]