201967940

素因数分解:

$2^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{157}}^1\times {\mathrm{491}}^1$

素因数の和:788

約数の個数: 48

約数和(自身を含む): 430968384

約数和(自身を除く): 229000444

約数列:

[1, 2, 4, 5, 10, 20, 131, 157, 262, 314, 491, 524, 628, 655, 785, 982, 1310, 1570, 1964, 2455, 2620, 3140, 4910, 9820, 20567, 41134, 64321, 77087, 82268, 102835, 128642, 154174, 205670, 257284, 308348, 321605, 385435, 411340, 643210, 770870, 1286420, 1541740, 10098397, 20196794, 40393588, 50491985, 100983970, 201967940]

約数ペア:

[(1, 201967940), (2, 100983970), (4, 50491985), (5, 40393588), (10, 20196794), (20, 10098397), (131, 1541740), (157, 1286420), (262, 770870), (314, 643210), (491, 411340), (524, 385435), (628, 321605), (655, 308348), (785, 257284), (982, 205670), (1310, 154174), (1570, 128642), (1964, 102835), (2455, 82268), (2620, 77087), (3140, 64321), (4910, 41134), (9820, 20567)]