40864000

素因数分解:

$2^8\times 5^3\times {\mathrm{1277}}^1$

素因数の和:1308

約数の個数: 72

約数和(自身を含む): 101877048

約数和(自身を除く): 61013048

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 125, 128, 160, 200, 250, 256, 320, 400, 500, 640, 800, 1000, 1277, 1280, 1600, 2000, 2554, 3200, 4000, 5108, 6385, 6400, 8000, 10216, 12770, 16000, 20432, 25540, 31925, 32000, 40864, 51080, 63850, 81728, 102160, 127700, 159625, 163456, 204320, 255400, 319250, 326912, 408640, 510800, 638500, 817280, 1021600, 1277000, 1634560, 2043200, 2554000, 4086400, 5108000, 8172800, 10216000, 20432000, 40864000]

約数ペア:

[(1, 40864000), (2, 20432000), (4, 10216000), (5, 8172800), (8, 5108000), (10, 4086400), (16, 2554000), (20, 2043200), (25, 1634560), (32, 1277000), (40, 1021600), (50, 817280), (64, 638500), (80, 510800), (100, 408640), (125, 326912), (128, 319250), (160, 255400), (200, 204320), (250, 163456), (256, 159625), (320, 127700), (400, 102160), (500, 81728), (640, 63850), (800, 51080), (1000, 40864), (1277, 32000), (1280, 31925), (1600, 25540), (2000, 20432), (2554, 16000), (3200, 12770), (4000, 10216), (5108, 8000), (6385, 6400)]