257901100

素因数分解:

$2^2\times 5^2\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{1621}}^1$

素因数の和:1715

約数の個数: 72

約数和(自身を含む): 588500528

約数和(自身を除く): 330599428

約数列:

[1, 2, 4, 5, 10, 20, 25, 37, 43, 50, 74, 86, 100, 148, 172, 185, 215, 370, 430, 740, 860, 925, 1075, 1591, 1621, 1850, 2150, 3182, 3242, 3700, 4300, 6364, 6484, 7955, 8105, 15910, 16210, 31820, 32420, 39775, 40525, 59977, 69703, 79550, 81050, 119954, 139406, 159100, 162100, 239908, 278812, 299885, 348515, 599770, 697030, 1199540, 1394060, 1499425, 1742575, 2579011, 2998850, 3485150, 5158022, 5997700, 6970300, 10316044, 12895055, 25790110, 51580220, 64475275, 128950550, 257901100]

約数ペア:

[(1, 257901100), (2, 128950550), (4, 64475275), (5, 51580220), (10, 25790110), (20, 12895055), (25, 10316044), (37, 6970300), (43, 5997700), (50, 5158022), (74, 3485150), (86, 2998850), (100, 2579011), (148, 1742575), (172, 1499425), (185, 1394060), (215, 1199540), (370, 697030), (430, 599770), (740, 348515), (860, 299885), (925, 278812), (1075, 239908), (1591, 162100), (1621, 159100), (1850, 139406), (2150, 119954), (3182, 81050), (3242, 79550), (3700, 69703), (4300, 59977), (6364, 40525), (6484, 39775), (7955, 32420), (8105, 31820), (15910, 16210)]