28465280

素因数分解:

$2^7\times 5^1\times {\mathrm{79}}^1\times {\mathrm{563}}^1$

素因数の和:661

約数の個数: 64

約数和(自身を含む): 69033600

約数和(自身を除く): 40568320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 79, 80, 128, 158, 160, 316, 320, 395, 563, 632, 640, 790, 1126, 1264, 1580, 2252, 2528, 2815, 3160, 4504, 5056, 5630, 6320, 9008, 10112, 11260, 12640, 18016, 22520, 25280, 36032, 44477, 45040, 50560, 72064, 88954, 90080, 177908, 180160, 222385, 355816, 360320, 444770, 711632, 889540, 1423264, 1779080, 2846528, 3558160, 5693056, 7116320, 14232640, 28465280]

約数ペア:

[(1, 28465280), (2, 14232640), (4, 7116320), (5, 5693056), (8, 3558160), (10, 2846528), (16, 1779080), (20, 1423264), (32, 889540), (40, 711632), (64, 444770), (79, 360320), (80, 355816), (128, 222385), (158, 180160), (160, 177908), (316, 90080), (320, 88954), (395, 72064), (563, 50560), (632, 45040), (640, 44477), (790, 36032), (1126, 25280), (1264, 22520), (1580, 18016), (2252, 12640), (2528, 11260), (2815, 10112), (3160, 9008), (4504, 6320), (5056, 5630)]