251010981

素因数分解:

$3^5\times {\mathrm{13}}^1\times {\mathrm{181}}^1\times {\mathrm{439}}^1$

素因数の和:648

約数の個数: 48

約数和(自身を含む): 408087680

約数和(自身を除く): 157076699

約数列:

[1, 3, 9, 13, 27, 39, 81, 117, 181, 243, 351, 439, 543, 1053, 1317, 1629, 2353, 3159, 3951, 4887, 5707, 7059, 11853, 14661, 17121, 21177, 35559, 43983, 51363, 63531, 79459, 106677, 154089, 190593, 238377, 462267, 571779, 715131, 1032967, 1386801, 2145393, 3098901, 6436179, 9296703, 19308537, 27890109, 83670327, 251010981]

約数ペア:

[(1, 251010981), (3, 83670327), (9, 27890109), (13, 19308537), (27, 9296703), (39, 6436179), (81, 3098901), (117, 2145393), (181, 1386801), (243, 1032967), (351, 715131), (439, 571779), (543, 462267), (1053, 238377), (1317, 190593), (1629, 154089), (2353, 106677), (3159, 79459), (3951, 63531), (4887, 51363), (5707, 43983), (7059, 35559), (11853, 21177), (14661, 17121)]