261492010

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{359}}^1\times {\mathrm{431}}^1$

素因数の和:823

約数の個数: 48

約数和(自身を含む): 512282880

約数和(自身を除く): 250790870

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 169, 338, 359, 431, 718, 845, 862, 1690, 1795, 2155, 3590, 4310, 4667, 5603, 9334, 11206, 23335, 28015, 46670, 56030, 60671, 72839, 121342, 145678, 154729, 303355, 309458, 364195, 606710, 728390, 773645, 1547290, 2011477, 4022954, 10057385, 20114770, 26149201, 52298402, 130746005, 261492010]

約数ペア:

[(1, 261492010), (2, 130746005), (5, 52298402), (10, 26149201), (13, 20114770), (26, 10057385), (65, 4022954), (130, 2011477), (169, 1547290), (338, 773645), (359, 728390), (431, 606710), (718, 364195), (845, 309458), (862, 303355), (1690, 154729), (1795, 145678), (2155, 121342), (3590, 72839), (4310, 60671), (4667, 56030), (5603, 46670), (9334, 28015), (11206, 23335)]