20857096

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{251}}^1$

素因数の和:334

約数の個数: 64

約数和(自身を含む): 45722880

約数和(自身を除く): 24865784

約数列:

[1, 2, 4, 8, 13, 17, 26, 34, 47, 52, 68, 94, 104, 136, 188, 221, 251, 376, 442, 502, 611, 799, 884, 1004, 1222, 1598, 1768, 2008, 2444, 3196, 3263, 4267, 4888, 6392, 6526, 8534, 10387, 11797, 13052, 17068, 20774, 23594, 26104, 34136, 41548, 47188, 55471, 83096, 94376, 110942, 153361, 200549, 221884, 306722, 401098, 443768, 613444, 802196, 1226888, 1604392, 2607137, 5214274, 10428548, 20857096]

約数ペア:

[(1, 20857096), (2, 10428548), (4, 5214274), (8, 2607137), (13, 1604392), (17, 1226888), (26, 802196), (34, 613444), (47, 443768), (52, 401098), (68, 306722), (94, 221884), (104, 200549), (136, 153361), (188, 110942), (221, 94376), (251, 83096), (376, 55471), (442, 47188), (502, 41548), (611, 34136), (799, 26104), (884, 23594), (1004, 20774), (1222, 17068), (1598, 13052), (1768, 11797), (2008, 10387), (2444, 8534), (3196, 6526), (3263, 6392), (4267, 4888)]