18924213

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{79}}^1$

素因数の和:178

約数の個数: 64

約数和(自身を含む): 34283520

約数和(自身を除く): 15359307

約数列:

[1, 3, 7, 11, 17, 21, 33, 51, 61, 77, 79, 119, 183, 187, 231, 237, 357, 427, 553, 561, 671, 869, 1037, 1281, 1309, 1343, 1659, 2013, 2607, 3111, 3927, 4029, 4697, 4819, 6083, 7259, 9401, 11407, 14091, 14457, 14773, 18249, 21777, 28203, 33733, 34221, 44319, 53009, 79849, 81923, 101199, 103411, 159027, 239547, 245769, 310233, 371063, 573461, 901153, 1113189, 1720383, 2703459, 6308071, 18924213]

約数ペア:

[(1, 18924213), (3, 6308071), (7, 2703459), (11, 1720383), (17, 1113189), (21, 901153), (33, 573461), (51, 371063), (61, 310233), (77, 245769), (79, 239547), (119, 159027), (183, 103411), (187, 101199), (231, 81923), (237, 79849), (357, 53009), (427, 44319), (553, 34221), (561, 33733), (671, 28203), (869, 21777), (1037, 18249), (1281, 14773), (1309, 14457), (1343, 14091), (1659, 11407), (2013, 9401), (2607, 7259), (3111, 6083), (3927, 4819), (4029, 4697)]