21127428

素因数分解:

$2^2\times 3^2\times 7^3\times {\mathrm{29}}^1\times {\mathrm{59}}^1$

素因数の和:119

約数の個数: 144

約数和(自身を含む): 65520000

約数和(自身を除く): 44392572

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 29, 36, 42, 49, 58, 59, 63, 84, 87, 98, 116, 118, 126, 147, 174, 177, 196, 203, 236, 252, 261, 294, 343, 348, 354, 406, 413, 441, 522, 531, 588, 609, 686, 708, 812, 826, 882, 1029, 1044, 1062, 1218, 1239, 1372, 1421, 1652, 1711, 1764, 1827, 2058, 2124, 2436, 2478, 2842, 2891, 3087, 3422, 3654, 3717, 4116, 4263, 4956, 5133, 5684, 5782, 6174, 6844, 7308, 7434, 8526, 8673, 9947, 10266, 11564, 11977, 12348, 12789, 14868, 15399, 17052, 17346, 19894, 20237, 20532, 23954, 25578, 26019, 29841, 30798, 34692, 35931, 39788, 40474, 47908, 51156, 52038, 59682, 60711, 61596, 71862, 80948, 83839, 89523, 104076, 107793, 119364, 121422, 143724, 167678, 179046, 182133, 215586, 242844, 251517, 335356, 358092, 364266, 431172, 503034, 586873, 728532, 754551, 1006068, 1173746, 1509102, 1760619, 2347492, 3018204, 3521238, 5281857, 7042476, 10563714, 21127428]

約数ペア:

[(1, 21127428), (2, 10563714), (3, 7042476), (4, 5281857), (6, 3521238), (7, 3018204), (9, 2347492), (12, 1760619), (14, 1509102), (18, 1173746), (21, 1006068), (28, 754551), (29, 728532), (36, 586873), (42, 503034), (49, 431172), (58, 364266), (59, 358092), (63, 335356), (84, 251517), (87, 242844), (98, 215586), (116, 182133), (118, 179046), (126, 167678), (147, 143724), (174, 121422), (177, 119364), (196, 107793), (203, 104076), (236, 89523), (252, 83839), (261, 80948), (294, 71862), (343, 61596), (348, 60711), (354, 59682), (406, 52038), (413, 51156), (441, 47908), (522, 40474), (531, 39788), (588, 35931), (609, 34692), (686, 30798), (708, 29841), (812, 26019), (826, 25578), (882, 23954), (1029, 20532), (1044, 20237), (1062, 19894), (1218, 17346), (1239, 17052), (1372, 15399), (1421, 14868), (1652, 12789), (1711, 12348), (1764, 11977), (1827, 11564), (2058, 10266), (2124, 9947), (2436, 8673), (2478, 8526), (2842, 7434), (2891, 7308), (3087, 6844), (3422, 6174), (3654, 5782), (3717, 5684), (4116, 5133), (4263, 4956)]