19891053

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{149}}^1\times {\mathrm{163}}^1$

素因数の和:338

約数の個数: 48

約数和(自身を含む): 35817600

約数和(自身を除く): 15926547

約数列:

[1, 3, 7, 9, 13, 21, 39, 63, 91, 117, 149, 163, 273, 447, 489, 819, 1043, 1141, 1341, 1467, 1937, 2119, 3129, 3423, 5811, 6357, 9387, 10269, 13559, 14833, 17433, 19071, 24287, 40677, 44499, 72861, 122031, 133497, 170009, 218583, 315731, 510027, 947193, 1530081, 2210117, 2841579, 6630351, 19891053]

約数ペア:

[(1, 19891053), (3, 6630351), (7, 2841579), (9, 2210117), (13, 1530081), (21, 947193), (39, 510027), (63, 315731), (91, 218583), (117, 170009), (149, 133497), (163, 122031), (273, 72861), (447, 44499), (489, 40677), (819, 24287), (1043, 19071), (1141, 17433), (1341, 14833), (1467, 13559), (1937, 10269), (2119, 9387), (3129, 6357), (3423, 5811)]