208984960

素因数分解:

$2^7\times 5^1\times {\mathrm{326539}}^1$

素因数の和:326558

約数の個数: 32

約数和(自身を含む): 499606200

約数和(自身を除く): 290621240

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 326539, 653078, 1306156, 1632695, 2612312, 3265390, 5224624, 6530780, 10449248, 13061560, 20898496, 26123120, 41796992, 52246240, 104492480, 208984960]

約数ペア:

[(1, 208984960), (2, 104492480), (4, 52246240), (5, 41796992), (8, 26123120), (10, 20898496), (16, 13061560), (20, 10449248), (32, 6530780), (40, 5224624), (64, 3265390), (80, 2612312), (128, 1632695), (160, 1306156), (320, 653078), (640, 326539)]