21080535

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1$

素因数の和:117

約数の個数: 96

約数和(自身を含む): 43338240

約数和(自身を除く): 22257705

約数列:

[1, 3, 5, 7, 15, 21, 23, 29, 35, 43, 49, 69, 87, 105, 115, 129, 145, 147, 161, 203, 215, 245, 301, 345, 435, 483, 609, 645, 667, 735, 805, 903, 989, 1015, 1127, 1247, 1421, 1505, 2001, 2107, 2415, 2967, 3045, 3335, 3381, 3741, 4263, 4515, 4669, 4945, 5635, 6235, 6321, 6923, 7105, 8729, 10005, 10535, 14007, 14835, 16905, 18705, 20769, 21315, 23345, 26187, 28681, 31605, 32683, 34615, 43645, 48461, 61103, 70035, 86043, 98049, 103845, 130935, 143405, 145383, 163415, 183309, 200767, 242305, 305515, 430215, 490245, 602301, 726915, 916545, 1003835, 1405369, 3011505, 4216107, 7026845, 21080535]

約数ペア:

[(1, 21080535), (3, 7026845), (5, 4216107), (7, 3011505), (15, 1405369), (21, 1003835), (23, 916545), (29, 726915), (35, 602301), (43, 490245), (49, 430215), (69, 305515), (87, 242305), (105, 200767), (115, 183309), (129, 163415), (145, 145383), (147, 143405), (161, 130935), (203, 103845), (215, 98049), (245, 86043), (301, 70035), (345, 61103), (435, 48461), (483, 43645), (609, 34615), (645, 32683), (667, 31605), (735, 28681), (805, 26187), (903, 23345), (989, 21315), (1015, 20769), (1127, 18705), (1247, 16905), (1421, 14835), (1505, 14007), (2001, 10535), (2107, 10005), (2415, 8729), (2967, 7105), (3045, 6923), (3335, 6321), (3381, 6235), (3741, 5635), (4263, 4945), (4515, 4669)]