19966180

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{1873}}^1$

素因数の和:1936

約数の個数: 48

約数和(自身を含む): 46280304

約数和(自身を除く): 26314124

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 41, 52, 65, 82, 130, 164, 205, 260, 410, 533, 820, 1066, 1873, 2132, 2665, 3746, 5330, 7492, 9365, 10660, 18730, 24349, 37460, 48698, 76793, 97396, 121745, 153586, 243490, 307172, 383965, 486980, 767930, 998309, 1535860, 1996618, 3993236, 4991545, 9983090, 19966180]

約数ペア:

[(1, 19966180), (2, 9983090), (4, 4991545), (5, 3993236), (10, 1996618), (13, 1535860), (20, 998309), (26, 767930), (41, 486980), (52, 383965), (65, 307172), (82, 243490), (130, 153586), (164, 121745), (205, 97396), (260, 76793), (410, 48698), (533, 37460), (820, 24349), (1066, 18730), (1873, 10660), (2132, 9365), (2665, 7492), (3746, 5330)]