199955990

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{191}}^1\times {\mathrm{8053}}^1$

素因数の和:8264

約数の個数: 32

約数和(自身を含む): 389684736

約数和(自身を除く): 189728746

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 191, 382, 955, 1910, 2483, 4966, 8053, 12415, 16106, 24830, 40265, 80530, 104689, 209378, 523445, 1046890, 1538123, 3076246, 7690615, 15381230, 19995599, 39991198, 99977995, 199955990]

約数ペア:

[(1, 199955990), (2, 99977995), (5, 39991198), (10, 19995599), (13, 15381230), (26, 7690615), (65, 3076246), (130, 1538123), (191, 1046890), (382, 523445), (955, 209378), (1910, 104689), (2483, 80530), (4966, 40265), (8053, 24830), (12415, 16106)]