21287856

素因数分解:

$2^4\times 3^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{373}}^1$

素因数の和:454

約数の個数: 80

約数和(自身を含む): 58433760

約数和(自身を除く): 37145904

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 29, 41, 48, 58, 82, 87, 116, 123, 164, 174, 232, 246, 328, 348, 373, 464, 492, 656, 696, 746, 984, 1119, 1189, 1392, 1492, 1968, 2238, 2378, 2984, 3567, 4476, 4756, 5968, 7134, 8952, 9512, 10817, 14268, 15293, 17904, 19024, 21634, 28536, 30586, 32451, 43268, 45879, 57072, 61172, 64902, 86536, 91758, 122344, 129804, 173072, 183516, 244688, 259608, 367032, 443497, 519216, 734064, 886994, 1330491, 1773988, 2660982, 3547976, 5321964, 7095952, 10643928, 21287856]

約数ペア:

[(1, 21287856), (2, 10643928), (3, 7095952), (4, 5321964), (6, 3547976), (8, 2660982), (12, 1773988), (16, 1330491), (24, 886994), (29, 734064), (41, 519216), (48, 443497), (58, 367032), (82, 259608), (87, 244688), (116, 183516), (123, 173072), (164, 129804), (174, 122344), (232, 91758), (246, 86536), (328, 64902), (348, 61172), (373, 57072), (464, 45879), (492, 43268), (656, 32451), (696, 30586), (746, 28536), (984, 21634), (1119, 19024), (1189, 17904), (1392, 15293), (1492, 14268), (1968, 10817), (2238, 9512), (2378, 8952), (2984, 7134), (3567, 5968), (4476, 4756)]