19881666

素因数分解:

$2^1\times 3^3\times 7^1\times {\mathrm{149}}^1\times {\mathrm{353}}^1$

素因数の和:520

約数の個数: 64

約数和(自身を含む): 50976000

約数和(自身を除く): 31094334

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 27, 42, 54, 63, 126, 149, 189, 298, 353, 378, 447, 706, 894, 1043, 1059, 1341, 2086, 2118, 2471, 2682, 3129, 3177, 4023, 4942, 6258, 6354, 7413, 8046, 9387, 9531, 14826, 18774, 19062, 22239, 28161, 44478, 52597, 56322, 66717, 105194, 133434, 157791, 315582, 368179, 473373, 736358, 946746, 1104537, 1420119, 2209074, 2840238, 3313611, 6627222, 9940833, 19881666]

約数ペア:

[(1, 19881666), (2, 9940833), (3, 6627222), (6, 3313611), (7, 2840238), (9, 2209074), (14, 1420119), (18, 1104537), (21, 946746), (27, 736358), (42, 473373), (54, 368179), (63, 315582), (126, 157791), (149, 133434), (189, 105194), (298, 66717), (353, 56322), (378, 52597), (447, 44478), (706, 28161), (894, 22239), (1043, 19062), (1059, 18774), (1341, 14826), (2086, 9531), (2118, 9387), (2471, 8046), (2682, 7413), (3129, 6354), (3177, 6258), (4023, 4942)]