19913660

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{191}}^1\times {\mathrm{401}}^1$

素因数の和:614

約数の個数: 48

約数和(自身を含む): 45384192

約数和(自身を除く): 25470532

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 191, 260, 382, 401, 764, 802, 955, 1604, 1910, 2005, 2483, 3820, 4010, 4966, 5213, 8020, 9932, 10426, 12415, 20852, 24830, 26065, 49660, 52130, 76591, 104260, 153182, 306364, 382955, 765910, 995683, 1531820, 1991366, 3982732, 4978415, 9956830, 19913660]

約数ペア:

[(1, 19913660), (2, 9956830), (4, 4978415), (5, 3982732), (10, 1991366), (13, 1531820), (20, 995683), (26, 765910), (52, 382955), (65, 306364), (130, 153182), (191, 104260), (260, 76591), (382, 52130), (401, 49660), (764, 26065), (802, 24830), (955, 20852), (1604, 12415), (1910, 10426), (2005, 9932), (2483, 8020), (3820, 5213), (4010, 4966)]