19881147

素因数分解:

$3^1\times {\mathrm{11}}^3\times {\mathrm{13}}^1\times {\mathrm{383}}^1$

素因数の和:432

約数の個数: 32

約数和(自身を含む): 31481856

約数和(自身を除く): 11600709

約数列:

[1, 3, 11, 13, 33, 39, 121, 143, 363, 383, 429, 1149, 1331, 1573, 3993, 4213, 4719, 4979, 12639, 14937, 17303, 46343, 51909, 54769, 139029, 164307, 509773, 602459, 1529319, 1807377, 6627049, 19881147]

約数ペア:

[(1, 19881147), (3, 6627049), (11, 1807377), (13, 1529319), (33, 602459), (39, 509773), (121, 164307), (143, 139029), (363, 54769), (383, 51909), (429, 46343), (1149, 17303), (1331, 14937), (1573, 12639), (3993, 4979), (4213, 4719)]