19965748

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{109}}^1\times {\mathrm{181}}^1$

素因数の和:328

約数の個数: 48

約数和(自身を含む): 40360320

約数和(自身を除く): 20394572

約数列:

[1, 2, 4, 11, 22, 23, 44, 46, 92, 109, 181, 218, 253, 362, 436, 506, 724, 1012, 1199, 1991, 2398, 2507, 3982, 4163, 4796, 5014, 7964, 8326, 10028, 16652, 19729, 27577, 39458, 45793, 55154, 78916, 91586, 110308, 183172, 217019, 434038, 453767, 868076, 907534, 1815068, 4991437, 9982874, 19965748]

約数ペア:

[(1, 19965748), (2, 9982874), (4, 4991437), (11, 1815068), (22, 907534), (23, 868076), (44, 453767), (46, 434038), (92, 217019), (109, 183172), (181, 110308), (218, 91586), (253, 78916), (362, 55154), (436, 45793), (506, 39458), (724, 27577), (1012, 19729), (1199, 16652), (1991, 10028), (2398, 8326), (2507, 7964), (3982, 5014), (4163, 4796)]