21757428

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{167}}^1$

素因数の和:242

約数の個数: 144

約数和(自身を含む): 70447104

約数和(自身を除く): 48689676

約数列:

[1, 2, 3, 4, 6, 7, 9, 11, 12, 14, 18, 21, 22, 28, 33, 36, 42, 44, 47, 63, 66, 77, 84, 94, 99, 126, 132, 141, 154, 167, 188, 198, 231, 252, 282, 308, 329, 334, 396, 423, 462, 501, 517, 564, 658, 668, 693, 846, 924, 987, 1002, 1034, 1169, 1316, 1386, 1503, 1551, 1692, 1837, 1974, 2004, 2068, 2338, 2772, 2961, 3006, 3102, 3507, 3619, 3674, 3948, 4653, 4676, 5511, 5922, 6012, 6204, 7014, 7238, 7348, 7849, 9306, 10521, 10857, 11022, 11844, 12859, 14028, 14476, 15698, 16533, 18612, 21042, 21714, 22044, 23547, 25718, 31396, 32571, 33066, 38577, 42084, 43428, 47094, 51436, 54943, 65142, 66132, 70641, 77154, 86339, 94188, 109886, 115731, 130284, 141282, 154308, 164829, 172678, 219772, 231462, 259017, 282564, 329658, 345356, 462924, 494487, 518034, 604373, 659316, 777051, 988974, 1036068, 1208746, 1554102, 1813119, 1977948, 2417492, 3108204, 3626238, 5439357, 7252476, 10878714, 21757428]

約数ペア:

[(1, 21757428), (2, 10878714), (3, 7252476), (4, 5439357), (6, 3626238), (7, 3108204), (9, 2417492), (11, 1977948), (12, 1813119), (14, 1554102), (18, 1208746), (21, 1036068), (22, 988974), (28, 777051), (33, 659316), (36, 604373), (42, 518034), (44, 494487), (47, 462924), (63, 345356), (66, 329658), (77, 282564), (84, 259017), (94, 231462), (99, 219772), (126, 172678), (132, 164829), (141, 154308), (154, 141282), (167, 130284), (188, 115731), (198, 109886), (231, 94188), (252, 86339), (282, 77154), (308, 70641), (329, 66132), (334, 65142), (396, 54943), (423, 51436), (462, 47094), (501, 43428), (517, 42084), (564, 38577), (658, 33066), (668, 32571), (693, 31396), (846, 25718), (924, 23547), (987, 22044), (1002, 21714), (1034, 21042), (1169, 18612), (1316, 16533), (1386, 15698), (1503, 14476), (1551, 14028), (1692, 12859), (1837, 11844), (1974, 11022), (2004, 10857), (2068, 10521), (2338, 9306), (2772, 7849), (2961, 7348), (3006, 7238), (3102, 7014), (3507, 6204), (3619, 6012), (3674, 5922), (3948, 5511), (4653, 4676)]