491764820

素因数分解:

$2^2\times 5^1\times {\mathrm{157}}^1\times {\mathrm{199}}^1\times {\mathrm{787}}^1$

素因数の和:1152

約数の個数: 48

約数和(自身を含む): 1045833600

約数和(自身を除く): 554068780

約数列:

[1, 2, 4, 5, 10, 20, 157, 199, 314, 398, 628, 785, 787, 796, 995, 1570, 1574, 1990, 3140, 3148, 3935, 3980, 7870, 15740, 31243, 62486, 123559, 124972, 156215, 156613, 247118, 312430, 313226, 494236, 617795, 624860, 626452, 783065, 1235590, 1566130, 2471180, 3132260, 24588241, 49176482, 98352964, 122941205, 245882410, 491764820]

約数ペア:

[(1, 491764820), (2, 245882410), (4, 122941205), (5, 98352964), (10, 49176482), (20, 24588241), (157, 3132260), (199, 2471180), (314, 1566130), (398, 1235590), (628, 783065), (785, 626452), (787, 624860), (796, 617795), (995, 494236), (1570, 313226), (1574, 312430), (1990, 247118), (3140, 156613), (3148, 156215), (3935, 124972), (3980, 123559), (7870, 62486), (15740, 31243)]