21752960

素因数分解:

$2^7\times 5^1\times {\mathrm{41}}^1\times {\mathrm{829}}^1$

素因数の和:889

約数の個数: 64

約数和(自身を含む): 53335800

約数和(自身を除く): 31582840

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 41, 64, 80, 82, 128, 160, 164, 205, 320, 328, 410, 640, 656, 820, 829, 1312, 1640, 1658, 2624, 3280, 3316, 4145, 5248, 6560, 6632, 8290, 13120, 13264, 16580, 26240, 26528, 33160, 33989, 53056, 66320, 67978, 106112, 132640, 135956, 169945, 265280, 271912, 339890, 530560, 543824, 679780, 1087648, 1359560, 2175296, 2719120, 4350592, 5438240, 10876480, 21752960]

約数ペア:

[(1, 21752960), (2, 10876480), (4, 5438240), (5, 4350592), (8, 2719120), (10, 2175296), (16, 1359560), (20, 1087648), (32, 679780), (40, 543824), (41, 530560), (64, 339890), (80, 271912), (82, 265280), (128, 169945), (160, 135956), (164, 132640), (205, 106112), (320, 67978), (328, 66320), (410, 53056), (640, 33989), (656, 33160), (820, 26528), (829, 26240), (1312, 16580), (1640, 13264), (1658, 13120), (2624, 8290), (3280, 6632), (3316, 6560), (4145, 5248)]