21990147231

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{413683}}^1$

素因数の和:413775

約数の個数: 32

約数和(自身を含む): 33359477760

約数和(自身を除く): 11369330529

約数列:

[1, 3, 13, 29, 39, 47, 87, 141, 377, 611, 1131, 1363, 1833, 4089, 17719, 53157, 413683, 1241049, 5377879, 11996807, 16133637, 19443101, 35990421, 58329303, 155958491, 252760313, 467875473, 563849929, 758280939, 1691549787, 7330049077, 21990147231]

約数ペア:

[(1, 21990147231), (3, 7330049077), (13, 1691549787), (29, 758280939), (39, 563849929), (47, 467875473), (87, 252760313), (141, 155958491), (377, 58329303), (611, 35990421), (1131, 19443101), (1363, 16133637), (1833, 11996807), (4089, 5377879), (17719, 1241049), (53157, 413683)]