638595460

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{431}}^1\times {\mathrm{3221}}^1$

素因数の和:3684

約数の個数: 48

約数和(自身を含む): 1403039232

約数和(自身を除く): 764443772

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 115, 230, 431, 460, 862, 1724, 2155, 3221, 4310, 6442, 8620, 9913, 12884, 16105, 19826, 32210, 39652, 49565, 64420, 74083, 99130, 148166, 198260, 296332, 370415, 740830, 1388251, 1481660, 2776502, 5553004, 6941255, 13882510, 27765020, 31929773, 63859546, 127719092, 159648865, 319297730, 638595460]

約数ペア:

[(1, 638595460), (2, 319297730), (4, 159648865), (5, 127719092), (10, 63859546), (20, 31929773), (23, 27765020), (46, 13882510), (92, 6941255), (115, 5553004), (230, 2776502), (431, 1481660), (460, 1388251), (862, 740830), (1724, 370415), (2155, 296332), (3221, 198260), (4310, 148166), (6442, 99130), (8620, 74083), (9913, 64420), (12884, 49565), (16105, 39652), (19826, 32210)]