31075820

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{131}}^1\times {\mathrm{409}}^1$

素因数の和:578

約数の個数: 48

約数和(自身を含む): 68191200

約数和(自身を除く): 37115380

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 131, 145, 262, 290, 409, 524, 580, 655, 818, 1310, 1636, 2045, 2620, 3799, 4090, 7598, 8180, 11861, 15196, 18995, 23722, 37990, 47444, 53579, 59305, 75980, 107158, 118610, 214316, 237220, 267895, 535790, 1071580, 1553791, 3107582, 6215164, 7768955, 15537910, 31075820]

約数ペア:

[(1, 31075820), (2, 15537910), (4, 7768955), (5, 6215164), (10, 3107582), (20, 1553791), (29, 1071580), (58, 535790), (116, 267895), (131, 237220), (145, 214316), (262, 118610), (290, 107158), (409, 75980), (524, 59305), (580, 53579), (655, 47444), (818, 37990), (1310, 23722), (1636, 18995), (2045, 15196), (2620, 11861), (3799, 8180), (4090, 7598)]