20489448

素因数分解:

$2^3\times 3^1\times 7^3\times {\mathrm{19}}^1\times {\mathrm{131}}^1$

素因数の和:180

約数の個数: 128

約数和(自身を含む): 63360000

約数和(自身を除く): 42870552

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 19, 21, 24, 28, 38, 42, 49, 56, 57, 76, 84, 98, 114, 131, 133, 147, 152, 168, 196, 228, 262, 266, 294, 343, 392, 393, 399, 456, 524, 532, 588, 686, 786, 798, 917, 931, 1029, 1048, 1064, 1176, 1372, 1572, 1596, 1834, 1862, 2058, 2489, 2744, 2751, 2793, 3144, 3192, 3668, 3724, 4116, 4978, 5502, 5586, 6419, 6517, 7336, 7448, 7467, 8232, 9956, 11004, 11172, 12838, 13034, 14934, 17423, 19257, 19551, 19912, 22008, 22344, 25676, 26068, 29868, 34846, 38514, 39102, 44933, 51352, 52136, 52269, 59736, 69692, 77028, 78204, 89866, 104538, 121961, 134799, 139384, 154056, 156408, 179732, 209076, 243922, 269598, 359464, 365883, 418152, 487844, 539196, 731766, 853727, 975688, 1078392, 1463532, 1707454, 2561181, 2927064, 3414908, 5122362, 6829816, 10244724, 20489448]

約数ペア:

[(1, 20489448), (2, 10244724), (3, 6829816), (4, 5122362), (6, 3414908), (7, 2927064), (8, 2561181), (12, 1707454), (14, 1463532), (19, 1078392), (21, 975688), (24, 853727), (28, 731766), (38, 539196), (42, 487844), (49, 418152), (56, 365883), (57, 359464), (76, 269598), (84, 243922), (98, 209076), (114, 179732), (131, 156408), (133, 154056), (147, 139384), (152, 134799), (168, 121961), (196, 104538), (228, 89866), (262, 78204), (266, 77028), (294, 69692), (343, 59736), (392, 52269), (393, 52136), (399, 51352), (456, 44933), (524, 39102), (532, 38514), (588, 34846), (686, 29868), (786, 26068), (798, 25676), (917, 22344), (931, 22008), (1029, 19912), (1048, 19551), (1064, 19257), (1176, 17423), (1372, 14934), (1572, 13034), (1596, 12838), (1834, 11172), (1862, 11004), (2058, 9956), (2489, 8232), (2744, 7467), (2751, 7448), (2793, 7336), (3144, 6517), (3192, 6419), (3668, 5586), (3724, 5502), (4116, 4978)]