21707728

素因数分解:

$2^4\times 7^1\times {\mathrm{19}}^1\times {\mathrm{101}}^2$

素因数の和:236

約数の個数: 60

約数和(自身を含む): 51102880

約数和(自身を除く): 29395152

約数列:

[1, 2, 4, 7, 8, 14, 16, 19, 28, 38, 56, 76, 101, 112, 133, 152, 202, 266, 304, 404, 532, 707, 808, 1064, 1414, 1616, 1919, 2128, 2828, 3838, 5656, 7676, 10201, 11312, 13433, 15352, 20402, 26866, 30704, 40804, 53732, 71407, 81608, 107464, 142814, 163216, 193819, 214928, 285628, 387638, 571256, 775276, 1142512, 1356733, 1550552, 2713466, 3101104, 5426932, 10853864, 21707728]

約数ペア:

[(1, 21707728), (2, 10853864), (4, 5426932), (7, 3101104), (8, 2713466), (14, 1550552), (16, 1356733), (19, 1142512), (28, 775276), (38, 571256), (56, 387638), (76, 285628), (101, 214928), (112, 193819), (133, 163216), (152, 142814), (202, 107464), (266, 81608), (304, 71407), (404, 53732), (532, 40804), (707, 30704), (808, 26866), (1064, 20402), (1414, 15352), (1616, 13433), (1919, 11312), (2128, 10201), (2828, 7676), (3838, 5656)]