21637590

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{509}}^1$

素因数の和:641

約数の個数: 64

約数和(自身を含む): 56548800

約数和(自身を除く): 34911210

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 109, 130, 195, 218, 327, 390, 509, 545, 654, 1018, 1090, 1417, 1527, 1635, 2545, 2834, 3054, 3270, 4251, 5090, 6617, 7085, 7635, 8502, 13234, 14170, 15270, 19851, 21255, 33085, 39702, 42510, 55481, 66170, 99255, 110962, 166443, 198510, 277405, 332886, 554810, 721253, 832215, 1442506, 1664430, 2163759, 3606265, 4327518, 7212530, 10818795, 21637590]

約数ペア:

[(1, 21637590), (2, 10818795), (3, 7212530), (5, 4327518), (6, 3606265), (10, 2163759), (13, 1664430), (15, 1442506), (26, 832215), (30, 721253), (39, 554810), (65, 332886), (78, 277405), (109, 198510), (130, 166443), (195, 110962), (218, 99255), (327, 66170), (390, 55481), (509, 42510), (545, 39702), (654, 33085), (1018, 21255), (1090, 19851), (1417, 15270), (1527, 14170), (1635, 13234), (2545, 8502), (2834, 7635), (3054, 7085), (3270, 6617), (4251, 5090)]