21236072

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{977}}^1$

素因数の和:1026

約数の個数: 64

約数和(自身を含む): 49291200

約数和(自身を除く): 28055128

約数列:

[1, 2, 4, 8, 11, 13, 19, 22, 26, 38, 44, 52, 76, 88, 104, 143, 152, 209, 247, 286, 418, 494, 572, 836, 977, 988, 1144, 1672, 1954, 1976, 2717, 3908, 5434, 7816, 10747, 10868, 12701, 18563, 21494, 21736, 25402, 37126, 42988, 50804, 74252, 85976, 101608, 139711, 148504, 204193, 241319, 279422, 408386, 482638, 558844, 816772, 965276, 1117688, 1633544, 1930552, 2654509, 5309018, 10618036, 21236072]

約数ペア:

[(1, 21236072), (2, 10618036), (4, 5309018), (8, 2654509), (11, 1930552), (13, 1633544), (19, 1117688), (22, 965276), (26, 816772), (38, 558844), (44, 482638), (52, 408386), (76, 279422), (88, 241319), (104, 204193), (143, 148504), (152, 139711), (209, 101608), (247, 85976), (286, 74252), (418, 50804), (494, 42988), (572, 37126), (836, 25402), (977, 21736), (988, 21494), (1144, 18563), (1672, 12701), (1954, 10868), (1976, 10747), (2717, 7816), (3908, 5434)]