21933160

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{89}}^1\times {\mathrm{101}}^1$

素因数の和:262

約数の個数: 64

約数和(自身を含む): 51224400

約数和(自身を除く): 29291240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 89, 101, 122, 178, 202, 244, 305, 356, 404, 445, 488, 505, 610, 712, 808, 890, 1010, 1220, 1780, 2020, 2440, 3560, 4040, 5429, 6161, 8989, 10858, 12322, 17978, 21716, 24644, 27145, 30805, 35956, 43432, 44945, 49288, 54290, 61610, 71912, 89890, 108580, 123220, 179780, 217160, 246440, 359560, 548329, 1096658, 2193316, 2741645, 4386632, 5483290, 10966580, 21933160]

約数ペア:

[(1, 21933160), (2, 10966580), (4, 5483290), (5, 4386632), (8, 2741645), (10, 2193316), (20, 1096658), (40, 548329), (61, 359560), (89, 246440), (101, 217160), (122, 179780), (178, 123220), (202, 108580), (244, 89890), (305, 71912), (356, 61610), (404, 54290), (445, 49288), (488, 44945), (505, 43432), (610, 35956), (712, 30805), (808, 27145), (890, 24644), (1010, 21716), (1220, 17978), (1780, 12322), (2020, 10858), (2440, 8989), (3560, 6161), (4040, 5429)]