28475320

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{97}}^1\times {\mathrm{179}}^1$

素因数の和:328

約数の個数: 64

約数和(自身を含む): 66679200

約数和(自身を除く): 38203880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 97, 164, 179, 194, 205, 328, 358, 388, 410, 485, 716, 776, 820, 895, 970, 1432, 1640, 1790, 1940, 3580, 3880, 3977, 7160, 7339, 7954, 14678, 15908, 17363, 19885, 29356, 31816, 34726, 36695, 39770, 58712, 69452, 73390, 79540, 86815, 138904, 146780, 159080, 173630, 293560, 347260, 694520, 711883, 1423766, 2847532, 3559415, 5695064, 7118830, 14237660, 28475320]

約数ペア:

[(1, 28475320), (2, 14237660), (4, 7118830), (5, 5695064), (8, 3559415), (10, 2847532), (20, 1423766), (40, 711883), (41, 694520), (82, 347260), (97, 293560), (164, 173630), (179, 159080), (194, 146780), (205, 138904), (328, 86815), (358, 79540), (388, 73390), (410, 69452), (485, 58712), (716, 39770), (776, 36695), (820, 34726), (895, 31816), (970, 29356), (1432, 19885), (1640, 17363), (1790, 15908), (1940, 14678), (3580, 7954), (3880, 7339), (3977, 7160)]