21609954

素因数分解:

$2^1\times 3^2\times {\mathrm{19}}^1\times {\mathrm{179}}^1\times {\mathrm{353}}^1$

素因数の和:559

約数の個数: 48

約数和(自身を含む): 49701600

約数和(自身を除く): 28091646

約数列:

[1, 2, 3, 6, 9, 18, 19, 38, 57, 114, 171, 179, 342, 353, 358, 537, 706, 1059, 1074, 1611, 2118, 3177, 3222, 3401, 6354, 6707, 6802, 10203, 13414, 20121, 20406, 30609, 40242, 60363, 61218, 63187, 120726, 126374, 189561, 379122, 568683, 1137366, 1200553, 2401106, 3601659, 7203318, 10804977, 21609954]

約数ペア:

[(1, 21609954), (2, 10804977), (3, 7203318), (6, 3601659), (9, 2401106), (18, 1200553), (19, 1137366), (38, 568683), (57, 379122), (114, 189561), (171, 126374), (179, 120726), (342, 63187), (353, 61218), (358, 60363), (537, 40242), (706, 30609), (1059, 20406), (1074, 20121), (1611, 13414), (2118, 10203), (3177, 6802), (3222, 6707), (3401, 6354)]